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Bucharest</p></div></div></ul></div><div class="ri-section"><div class="ri-section-header"><span>Interests</span></div><div class="ri-tags-container"><a data-click-track="profile-user-info-expand-research-interests" data-has-card-for-ri-list="31885502" href="https://www.academia.edu/Documents/in/Strength_of_materials"><div id="js-react-on-rails-context" style="display:none" data-rails-context="{"inMailer":false,"i18nLocale":"en","i18nDefaultLocale":"en","href":"https://xn--til-7na.academia.edu/CarlosGuedesSoares","location":"/CarlosGuedesSoares","scheme":"https","host":"xn--til-7na.academia.edu","port":null,"pathname":"/CarlosGuedesSoares","search":null,"httpAcceptLanguage":null,"serverSide":false}"></div> <div class="js-react-on-rails-component" style="display:none" data-component-name="Pill" data-props="{"color":"gray","children":["Strength of materials"]}" data-trace="false" data-dom-id="Pill-react-component-9163b48d-940e-487c-8735-56bebbe4acbc"></div> <div 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style="width: 100%;"><div class="u-taCenter"></div><div class="profile--tab_content_container js-tab-pane tab-pane active" id="all"><div class="profile--tab_heading_container js-section-heading" data-section="Papers" id="Papers"><h3 class="profile--tab_heading_container">Papers by Carlos Guedes Soares</h3></div><div class="js-work-strip profile--work_container" data-work-id="123677443"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677443/A_New_Model_Uncertainty_Measure_of_Wave_Induced_Motions_and_Loads_on_a_Container_Ship_with_Forward_Speed"><img alt="Research paper thumbnail of A New Model Uncertainty Measure of Wave-Induced Motions and Loads on a Container Ship with Forward Speed" class="work-thumbnail" src="https://attachments.academia-assets.com/118053178/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677443/A_New_Model_Uncertainty_Measure_of_Wave_Induced_Motions_and_Loads_on_a_Container_Ship_with_Forward_Speed">A New Model Uncertainty Measure of Wave-Induced Motions and Loads on a Container Ship with Forward Speed</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">A new uncertainty quantifier is presented for linear transfer functions of wave-induced ship moti...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">A new uncertainty quantifier is presented for linear transfer functions of wave-induced ship motions and loads obtained by various seakeeping codes. The numerical simulations are conducted for the high-speed Flokstra container ship in regular waves at various heading angles, and the results are compared with existing experimental data. The study employs five numerical codes that are based on three different seakeeping theories, namely strip theory, 3D frequency-domain method, and 3D time-domain method. Multiple measures are applied to quantify the uncertainty in the calculated transfer functions, such as frequency-independent model error, coefficient of determination, and the total difference. In addition, a new measure of uncertainty, termed modified total difference, is proposed for determining the uncertainty of individual seakeeping codes based on experimental data rather than the mean of results obtained by numerical codes. Results show that the uncertainty measures can identif...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="745e57cb794b96ed2f41c8df005ae692" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053178,"asset_id":123677443,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053178/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677443"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677443"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677443; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677442"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677442/Review_of_the_Decision_Support_Methods_Used_in_Optimizing_Ship_Hulls_towards_Improving_Energy_Efficiency"><img alt="Research paper thumbnail of Review of the Decision Support Methods Used in Optimizing Ship Hulls towards Improving Energy Efficiency" class="work-thumbnail" src="https://attachments.academia-assets.com/118053169/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677442/Review_of_the_Decision_Support_Methods_Used_in_Optimizing_Ship_Hulls_towards_Improving_Energy_Efficiency">Review of the Decision Support Methods Used in Optimizing Ship Hulls towards Improving Energy Efficiency</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper presents a review of the different methods and techniques used to optimize ship hulls ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper presents a review of the different methods and techniques used to optimize ship hulls over the last six years (2017–2022). This review shows the different percentages of reduction in ship resistance, and thus in the fuel consumption, to improve ships’ energy efficiency, towards achieving the goal of maritime decarbonization. Operational research and machine learning are the common decision support methods and techniques used to find the optimal solution. This paper covers four research areas to improve ship hulls, including hull form, hull structure, hull cleaning and hull lubrication. In each area of research, several computer programs are used, depending on the study’s complexity and objective. It has been found that no specific method is considered the optimum, while the combination of several methods can achieve more accurate results. Most of the research work is focused on the concept stage of ship design, while research on operational conditions has recently taken p...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="403354208c5cd44d91a6861e74c6d0f2" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053169,"asset_id":123677442,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053169/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677442"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677442"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677442; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677441"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677441/New_Wave_Energy_Converter_Design_Inspired_by_the_Nenuphar_Plant"><img alt="Research paper thumbnail of New Wave Energy Converter Design Inspired by the Nenuphar Plant" class="work-thumbnail" src="https://attachments.academia-assets.com/118053174/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677441/New_Wave_Energy_Converter_Design_Inspired_by_the_Nenuphar_Plant">New Wave Energy Converter Design Inspired by the Nenuphar Plant</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper presents the Nenuphar concept, an innovative wave energy converter designed to use the...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper presents the Nenuphar concept, an innovative wave energy converter designed to use the kinetic and the potential energy of sea waves, based on the motions of seven modules. First, the main characteristics of the Nenuphar and its work principle are presented. Afterwards, the mathematical formulation of its dynamics is introduced and its validation with a simplified device. A specific MATLAB code was developed to determine the dynamics of hinged, multi-directional bodies. Then, the system’s behaviour was analysed under different wave conditions. The system performance was not strongly dependent on the wave characteristics or the device inclination angle. This initial study confirms the Nenuphar as a potential technology to extract energy from waves.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="7baa925c48c4d6f07dfbac88e373b6e6" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053174,"asset_id":123677441,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053174/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677441"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677441"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677441; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677440"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677440/Mooring_System_Transport_and_Installation_Logistics_for_a_Floating_Offshore_Wind_Farm_in_Lannion_France"><img alt="Research paper thumbnail of Mooring System Transport and Installation Logistics for a Floating Offshore Wind Farm in Lannion, France" class="work-thumbnail" src="https://attachments.academia-assets.com/118053163/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677440/Mooring_System_Transport_and_Installation_Logistics_for_a_Floating_Offshore_Wind_Farm_in_Lannion_France">Mooring System Transport and Installation Logistics for a Floating Offshore Wind Farm in Lannion, France</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This study addresses the planning procedures for the installation of the mooring systems that sup...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This study addresses the planning procedures for the installation of the mooring systems that support the floating offshore wind turbines in a wind farm. It considers the logistics of the installation process and discusses the important role of the weather windows in the planning of those operations at a preliminary stage of the project. The case study is based on a wind farm array of 47 Telwind floating wind turbine platforms, to be located in Lannion (France), with a potential of 470 MW. The study includes the transport and logistics requirements of different mooring components, such as chains, connectors and drag anchors; the description of the installation operations considering the typology of vessels that are necessary in these manoeuvres; as well as the planning and costs associated with the transport and installation. Given the diversity of elements and operations involved in the installation procedure, it is demonstrated that the research results of duration and costs of th...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="89f3d5171c202fae21a73d13150dc550" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053163,"asset_id":123677440,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053163/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677440"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677440"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677440; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677439"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677439/Numerical_Study_on_the_Mooring_Force_in_an_Offshore_Fish_Cage_Array"><img alt="Research paper thumbnail of Numerical Study on the Mooring Force in an Offshore Fish Cage Array" class="work-thumbnail" src="https://attachments.academia-assets.com/118053164/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677439/Numerical_Study_on_the_Mooring_Force_in_an_Offshore_Fish_Cage_Array">Numerical Study on the Mooring Force in an Offshore Fish Cage Array</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span><span>, 2022</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The mooring force in a fish cage array subjected to currents and waves is investigated using the ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The mooring force in a fish cage array subjected to currents and waves is investigated using the finite element method. Firstly, the numerical model of a fish cage array with six gravity cages is built by Ansys/APDL. Collars and bottom rings are simulated with pipe and beam elements while the rest structure is simulated with link elements, including the net and mooring cables. Thus, the weight and hydrodynamic load on the cables can be considered. The initial shape of the mooring ropes is calculated based on mooring dynamics. Since each component is a slender structure in the cage array, the Morison equation is used to calculate the hydrodynamic load. Secondly, the mooring forces are assessed for the system in different sea states. The locations of the maximum mooring force on different parts in the mooring system are found. The mean values and amplitudes of maximum mooring forces on different parts are calculated. The main ropes have the maximum mooring forces under all sea states....</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="b24ff5bb2487e81482d018dcc673b6a7" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053164,"asset_id":123677439,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053164/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677439"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677439"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677439; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677438"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677438/Risk_Forecast_System_for_Moored_Ships"><img alt="Research paper thumbnail of Risk Forecast System for Moored Ships" class="work-thumbnail" src="https://attachments.academia-assets.com/118053161/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677438/Risk_Forecast_System_for_Moored_Ships">Risk Forecast System for Moored Ships</a></div><div class="wp-workCard_item"><span>Coastal Engineering Proceedings</span><span>, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Port terminals downtimes lead to large economic losses and largely affect the port&#39;s overall ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Port terminals downtimes lead to large economic losses and largely affect the port&#39;s overall competitiveness. In the majority of cases, port activities such as ships&#39; approach maneuvers and loading/unloading operations, are conditioned or suspended, based solely on weather or wave forecasts. These forecasts do not always result in effective hazardous conditions for the ships. Additionally, moored ships often experience problems of excessive movements and mooring forces in apparent good weather conditions. If, instead, one could forecast the ships&#39; movements and mooring forces, risk assessment would be much more accurate. This would allow selecting an appropriate reinforced mooring arrangement and thus minimizing effective terminal downtime. In this paper, the development of a risk forecast system for moored ships, that takes into account all of the moored ship&#39;s system, is detailed and an illustration on how it applies to real ports is presented.Recorded Presentation...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="384a4e8b664e470572843d0240362f3a" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053161,"asset_id":123677438,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053161/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677438"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677438"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677438; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677437"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677437/A_benchmarking_exercise_for_environmental_contours"><img alt="Research paper thumbnail of A benchmarking exercise for environmental contours" class="work-thumbnail" src="https://attachments.academia-assets.com/118053204/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677437/A_benchmarking_exercise_for_environmental_contours">A benchmarking exercise for environmental contours</a></div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Environmental contours are used to simplify the process of design response analysis. A wide varie...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Environmental contours are used to simplify the process of design response analysis. A wide variety of contour methods exist; however, there have been a very limited number of comparisons of these methods to date. This paper is the output of an open benchmarking exercise, in which contributors developed contours based on their preferred methods and submitted them for a blind comparison study. The exercise had two componentsone, focusing on the robustness of contour methods across different offshore sites and, the other, focusing on characterizing sampling uncertainty. Nine teams of researchers contributed to the benchmark. The analysis of the submitted contours highlighted significant differences between contours derived via different methods. For example, the highest wave height value along a contour varied by as much as a factor of two between some submissions while the number of metocean data points or observations that fell outside a contour deviated by an order of magnitude between the contributions (even for contours with a return period shorter than the duration of the record). These differences arose from both different joint distribution models and different contour construction methods, however, variability from joint distribution models appeared to be higher than variability from contour construction methods.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="d2ec1592cfeb4662c71324e8620f188e" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053204,"asset_id":123677437,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053204/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677437"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677437"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677437; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677436"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677436/Condition_Based_Maintenance_for_Offshore_Wind_Turbines_Based_on_Support_Vector_Machine"><img alt="Research paper thumbnail of Condition-Based Maintenance for Offshore Wind Turbines Based on Support Vector Machine" class="work-thumbnail" src="https://attachments.academia-assets.com/118053159/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677436/Condition_Based_Maintenance_for_Offshore_Wind_Turbines_Based_on_Support_Vector_Machine">Condition-Based Maintenance for Offshore Wind Turbines Based on Support Vector Machine</a></div><div class="wp-workCard_item"><span>Energies</span><span>, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">A condition-based maintenance policy for offshore wind turbines is presented in consideration of ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">A condition-based maintenance policy for offshore wind turbines is presented in consideration of the maintenance uncertainty and the weather effect. In this paper, the offshore wind turbine is divided into four main assemblies—namely, the rotor, gearbox, generator, and pitch system. The support vector machine classification technique is implemented to analyze the failure information, which was collected from field data in China. According to the results of fault diagnosis and prediction, the assembly that reaches the corresponding maintenance threshold will be repaired. At the same time, a maintenance opportunity occurs for the rest of the components, and an optimized plan can be determined by arranging the maintenance combination and time. The calculated results indicate that the proposed condition-based maintenance policy is beneficial to reduce the maintenance expenditure of offshore wind turbines.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5e4009f16ae8e1c5a1527ae79d34ae82" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053159,"asset_id":123677436,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053159/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677436"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677436"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677436; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677434"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677434/Estimation_of_directional_sea_spectra_from_ship_motions_in_sea_trials"><img alt="Research paper thumbnail of Estimation of directional sea spectra from ship motions in sea trials" class="work-thumbnail" src="https://attachments.academia-assets.com/118053202/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677434/Estimation_of_directional_sea_spectra_from_ship_motions_in_sea_trials">Estimation of directional sea spectra from ship motions in sea trials</a></div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, 2017</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper compares the skill of two algorithms that enable real-time estimation of the direction...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper compares the skill of two algorithms that enable real-time estimation of the directional wave spectra exciting a ship from its measured motions. One algorithm consists of a nonlinear optimization of a parametric or non-parametric spectral model and the other is a Kalman filter based observer. Sea trials have been conducted on an oceanographic vessel that was instrumented with a six degree of freedom fibre optic gyro, complemented with a rate gyro, several accelerometers, a dedicated GPS receiver and a bow mounted downlooking wave radar with motion compensation. The two algorithms are applied to the measured data and a discussion is provided on their skill to recover the properties of existing sea states.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3308cb7431368b00b0e232a5ef8c2dd8" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053202,"asset_id":123677434,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053202/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677434"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677434"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677434; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=123677434]").text(description); $(".js-view-count[data-work-id=123677434]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 123677434; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='123677434']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677433"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677433/Experimental_and_numerical_study_of_the_vertical_motions_of_a_bulk_carrier_and_a_Ro_Ro_ship_in_extreme_waves"><img alt="Research paper thumbnail of Experimental and numerical study of the vertical motions of a bulk carrier and a Ro–Ro ship in extreme waves" class="work-thumbnail" src="https://attachments.academia-assets.com/118053157/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677433/Experimental_and_numerical_study_of_the_vertical_motions_of_a_bulk_carrier_and_a_Ro_Ro_ship_in_extreme_waves">Experimental and numerical study of the vertical motions of a bulk carrier and a Ro–Ro ship in extreme waves</a></div><div class="wp-workCard_item"><span>Journal of Ocean Engineering and Marine Energy</span><span>, 2015</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper investigates the experimental and numerical vertical motion responses of a bulk carrie...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper investigates the experimental and numerical vertical motion responses of a bulk carrier and a Roll-on/Roll-off ship in extreme seas. The experimental data were obtained from seakeeping tests with scaled models in head waves at two Froude numbers. The wave traces were predefined, corresponding to wave records measured during storms in the North Sea. These wave records are particularly interesting because each of them include one abnormal wave. The ship models, which are similar in length but different in their geometry, were tested in the same predefined wave conditions to investigate the influence of the hull geometry on the extreme vertical ship responses. Conclusions are derived by comparing directly the measured responses from the two models. Experimental data are also used as benchmark to validate the predictions by a partially nonlinear time domain seakeeping numerical model. The numerical model code is then used to generalize the comparative analysis between the two ships. Keywords Ship motions • Extreme waves • Nonlinear motions • Bulk carrier • Ro-Ro • Model tests</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="83567c5fcd6be9d7045e29add8a3e06d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053157,"asset_id":123677433,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053157/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677433"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677433"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677433; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677432"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677432/Time_frequency_analysis_of_the_sea_state_with_the_Andrea_freak_wave"><img alt="Research paper thumbnail of Time-frequency analysis of the sea state with the "Andrea" freak wave" class="work-thumbnail" src="https://attachments.academia-assets.com/118053200/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677432/Time_frequency_analysis_of_the_sea_state_with_the_Andrea_freak_wave">Time-frequency analysis of the sea state with the "Andrea" freak wave</a></div><div class="wp-workCard_item"><span>Natural Hazards and Earth System Sciences Discussions</span><span>, 2014</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The nonlinear and nonstationary properties of a special field wave record are analysed with the W...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The nonlinear and nonstationary properties of a special field wave record are analysed with the Wigner spectrum with the Choi-Williams kernel. The wave time series, which was recorded at the Ekofisk complex in the central North Sea at 00:40 UTC (universal time coordinated) on 9 November 2007, contains an abnormally high wave known as the "Andrea" wave. The ability of the Wigner spectrum to reveal the wave energy distribution in frequency and time is demonstrated. The results are compared with previous investigations for different sea states and also the state with Draupner's abnormal "New Year" wave.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2d8f15c7740e36be6551a0ae50613b6a" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053200,"asset_id":123677432,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053200/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677432"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677432"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677432; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677431"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677431/Dynamic_analysis_of_spar_type_floating_offshore_wind_turbine"><img alt="Research paper thumbnail of Dynamic analysis of spar type floating offshore wind turbine" class="work-thumbnail" src="https://attachments.academia-assets.com/118053201/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677431/Dynamic_analysis_of_spar_type_floating_offshore_wind_turbine">Dynamic analysis of spar type floating offshore wind turbine</a></div><div class="wp-workCard_item"><span>Edition 2, Tanger, Maroc</span><span>, 2011</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">In the present study, a coupled dynamic analysis of NREL 5MW Spar-type floating wind turbine is p...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In the present study, a coupled dynamic analysis of NREL 5MW Spar-type floating wind turbine is presented. The turbine design variables used in the analysis are the hub height of 90 m above the mean sea level, rotor diameter of 126 m and maximum rotor speed of 12.1 rpm. Hydrodynamic added mass, damping and exiting force are obtained in frequency domain using WAMIT and are validated with the result obtained for OC3 Hywind. The hydrodynamic study of the floater is combined with the FAST code to obtain a coupled aero-servo-hydro-elastic model. The spar-type floating wind turbine is considered to be connected with delta connection three mooring lines, and the mooring lines are fixed at bottom. The tower base motions and platform motions are obtained for wind speed 3.7 m/s with 4m wave height and 0º wave heading angle.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2d2fcb5694ad18d31af28df5ef2a6758" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053201,"asset_id":123677431,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053201/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677431"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677431"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677431; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677430"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677430/European_Research_in_Marine_Structures"><img alt="Research paper thumbnail of European Research in Marine Structures" class="work-thumbnail" src="https://attachments.academia-assets.com/118073299/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677430/European_Research_in_Marine_Structures">European Research in Marine Structures</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">An overview is presented of the results obtained in Europe by a network with a large number of re...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">An overview is presented of the results obtained in Europe by a network with a large number of research groups in the field of Marine Structures during a period of 6 years. The European Union has funded a project aimed at improving the collaboration among European research groups specialized in marine structures, which has led, among other results to a number of benchmark studies organized in 6 main topical areas, namely, Methods and Tools for Loads and Load Effects, Methods and Tools for Strength Assessment, Experimental Analysis of Structures, Materials and Fabrication of Structures, Methods and Tools for Structural Design and Optimization and Structural Reliability, Safety and Environmental Protection. This paper presents an overview of various studies performed, which helps identifying the level of consistency and robustness of different numeric tools used in this field.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="015f459305fd341208f4b23764be61a4" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118073299,"asset_id":123677430,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118073299/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677430"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677430"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677430; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656865"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656865/Non_Gaussian_Statistics_of_Mechanically_Generated_Unidirectional_Irregular_Waves"><img alt="Research paper thumbnail of Non-Gaussian Statistics of Mechanically Generated Unidirectional Irregular Waves" class="work-thumbnail" src="https://attachments.academia-assets.com/118037527/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656865/Non_Gaussian_Statistics_of_Mechanically_Generated_Unidirectional_Irregular_Waves">Non-Gaussian Statistics of Mechanically Generated Unidirectional Irregular Waves</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Application</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">An experimental study is presented on the non-Gaussian statistics of random unidirectional labora...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">An experimental study is presented on the non-Gaussian statistics of random unidirectional laboratory wave fields described by JONSWAP spectra. Relationships between statistical parameters indicative of the occurrence of large-amplitude waves are discussed in the context of the initial steepness of the waves combined with the effect of spectral peakedness. The spatial evolution of the relevant statistical and spectral parameters and features is also considered. It is demonstrated that over the distance the spectra exhibit features typical for developing nonlinear instabilities, such as spectral broadening and downshift of the peak, along with lowering of the high-frequency tail and decrease of the peak magnitude. The wave fields clearly show an increase of third-order nonlinearity with the distance, which can be significant, depending on the input wave environment. The steeper initial conditions, however, while favouring the occurrence of extremely large waves, also increase the cha...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="6634d762418e6a4e80d650226091c9bc" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037527,"asset_id":123656865,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037527/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656865"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656865"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656865; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656864"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656864/Hydrodynamic_Analysis_of_the_WIND_Bos_Spar_Floating_Offshore_Wind_Turbine"><img alt="Research paper thumbnail of Hydrodynamic Analysis of the WIND-Bos Spar Floating Offshore Wind Turbine" class="work-thumbnail" src="https://attachments.academia-assets.com/118037526/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656864/Hydrodynamic_Analysis_of_the_WIND_Bos_Spar_Floating_Offshore_Wind_Turbine">Hydrodynamic Analysis of the WIND-Bos Spar Floating Offshore Wind Turbine</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The WIND-bos spar Floating Offshore Wind Turbine is studied both experimentally and numerically. ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The WIND-bos spar Floating Offshore Wind Turbine is studied both experimentally and numerically. The experimental model of the moored WIND-bos platform is presented, and the different numerical models that have been developed to analyze the hydrodynamics of the platform are described. The results provide a detailed comparison of numerical and experimental motion responses of the floating structure in regular and irregular waves. The numerical study includes frequency domain results from spectral analysis, weakly nonlinear time-domain results from a validated in-house code, and coupled time-domain results from commercial software. The importance of damping calibration is put in evidence, whereas damping ratios are calculated iteratively in the coupled time-domain simulations, and nonlinear damping force is considered within the developed numerical scheme. The results compare well and also show that the novel concept has a good motion performance in general.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3601ffe6add1bc1f4b656291406becc9" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037526,"asset_id":123656864,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037526/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656864"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656864"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656864; 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Information about weather-related uncertainties is introduced by adopting ensemble forecast results. Classical reliability methods commonly used in structural analysis are adopted, allowing to achieve a simple yet effective evaluation of the probability of failure and the variability associated with the predicted fuel consumption and time of arrival. A quantitative example of application is provided, taking into consideration one of the main North Atlantic routes.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="8c132d2153633a85e81d7df2129847d5" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037521,"asset_id":123656863,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037521/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656863"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656863"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656863; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656862"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656862/Review_and_Prospects_for_Autonomous_Observing_Systems_in_Vessels_of_Opportunity"><img alt="Research paper thumbnail of Review and Prospects for Autonomous Observing Systems in Vessels of Opportunity" class="work-thumbnail" src="https://attachments.academia-assets.com/118037518/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656862/Review_and_Prospects_for_Autonomous_Observing_Systems_in_Vessels_of_Opportunity">Review and Prospects for Autonomous Observing Systems in Vessels of Opportunity</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper focuses on the state of the art on Autonomous Observing Systems (AOS) used in Vessels ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper focuses on the state of the art on Autonomous Observing Systems (AOS) used in Vessels of Opportunity (VOO) for collecting in situ atmospheric, oceanic and biogeochemical data. The designation Vessels of Opportunity includes all kinds of ships, even if not having scientific goals, which may carry proper devices that autonomously measure environmental variables. These vessels can be merchant, military, research, cruise liners, fishing, ferries, or even private yachts or sailing boats. The use of AOS can provide the opportunity for highly refined oceanographic data and improved derived data estimation, for local, regional or global scales studies. However, making the collected information accessible, both for scientific and technical purposes, provides a challenge in data management and analysis, which must, above all, ensure trusted useful data to the stakeholders. An overall review of the systems implemented is presented. This includes the definition of objectives, the rec...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="64048ecf123c72f98dad91095195b5e8" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037518,"asset_id":123656862,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037518/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656862"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656862"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656862; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656861"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656861/On_the_experimental_study_of_a_concentric_wave_energy_array_adapted_to_an_offshore_floating_platform"><img alt="Research paper thumbnail of On the experimental study of a concentric wave energy array adapted to an offshore floating platform" class="work-thumbnail" src="https://attachments.academia-assets.com/118037532/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656861/On_the_experimental_study_of_a_concentric_wave_energy_array_adapted_to_an_offshore_floating_platform">On the experimental study of a concentric wave energy array adapted to an offshore floating platform</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Experimental results of the dynamics of a small scale concentric wave energy converter array adap...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Experimental results of the dynamics of a small scale concentric wave energy converter array adapted to a floating offshore platform are presented. A small scale prototype is tested without and with twelve conical heaving point absorbers. The free decay and regular wave tests are carried out in an ocean basin to understand the hydrodynamic interactions between various elements of the floating offshore platform and wave energy converter array. Meanwhile, the heave motions of the buoys are observed in regular waves with and without dampers for the initial estimation of power take-off damping as a pitch control module. The results show the improvements in heave, pitch, and roll performance of the platform due to the interactio n between the buoys and platform.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2b6ed19e5bbcc6b4758d8c5829e927d1" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037532,"asset_id":123656861,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037532/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656861"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656861"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656861; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656860"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656860/Neural_Network_Approach_for_Predicting_Ship_Speed_and_Fuel_Consumption"><img alt="Research paper thumbnail of Neural Network Approach for Predicting Ship Speed and Fuel Consumption" class="work-thumbnail" src="https://attachments.academia-assets.com/118037524/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656860/Neural_Network_Approach_for_Predicting_Ship_Speed_and_Fuel_Consumption">Neural Network Approach for Predicting Ship Speed and Fuel Consumption</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">In this paper, simulations of a ship travelling on a given oceanic route were performed by a weat...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In this paper, simulations of a ship travelling on a given oceanic route were performed by a weather routing system to provide a large realistic navigation data set, which could represent a collection of data obtained on board a ship in operation. This data set was employed to train a neural network computing system in order to predict ship speed and fuel consumption. The model was trained using the Levenberg–Marquardt backpropagation scheme to establish the relation between the ship speed and the respective propulsion configuration for the existing sea conditions, i.e., the output torque of the main engine, the revolutions per minute of the propulsion shaft, the significant wave height, and the peak period of the waves, together with the relative angle of wave encounter. Additional results were obtained by also using the model to train the relationship between the same inputs used to determine the speed of the ship and the fuel consumption. A sensitivity analysis was performed to a...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="1a5ded5d9dd2a724b0b3b32d6e920b1b" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037524,"asset_id":123656860,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037524/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656860"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656860"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656860; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656859"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656859/Impact_of_Extratropical_Cyclone_Intensity_and_Speed_on_the_Extreme_Wave_Trends_in_the_Atlantic_Ocean"><img alt="Research paper thumbnail of Impact of Extratropical Cyclone Intensity and Speed on the Extreme Wave Trends in the Atlantic Ocean" class="work-thumbnail" src="https://attachments.academia-assets.com/118037537/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656859/Impact_of_Extratropical_Cyclone_Intensity_and_Speed_on_the_Extreme_Wave_Trends_in_the_Atlantic_Ocean">Impact of Extratropical Cyclone Intensity and Speed on the Extreme Wave Trends in the Atlantic Ocean</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This work analyzes the extratropical cyclone-related extreme waves in the ocean surface and their...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This work analyzes the extratropical cyclone-related extreme waves in the ocean surface and their trends in the North and South Atlantic Oceans. Atmospheric and ocean wave products are obtained from ERA5, from 1979 to 2020 with 1-hourly outputs, covering 42 years with the present climate changes evaluated by the difference between the two 21-years time slices. The cyclones are tracked through the relative vorticity at 850 hPa and then associated with extreme wave events using an automated scheme that searches for an extreme wave region 1500 km from the centre of the cyclone, following criteria that exclude possible swell dominated events. The hot-spot regions of cyclone-related waves occurrence found by the method are in agreement with previous studies and are related to the cyclogenesis region and storm track orientation. Most cyclones associated with extreme wave events are generated in the western boundary of the domains. The east-poleward side of the ocean basins presents the hi...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="9d9d56ad43593e38d320357eda7ea529" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037537,"asset_id":123656859,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037537/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656859"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656859"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656859; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> </div><div class="profile--tab_content_container js-tab-pane tab-pane" data-section-id="3006203" id="papers"><div class="js-work-strip profile--work_container" data-work-id="123677443"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677443/A_New_Model_Uncertainty_Measure_of_Wave_Induced_Motions_and_Loads_on_a_Container_Ship_with_Forward_Speed"><img alt="Research paper thumbnail of A New Model Uncertainty Measure of Wave-Induced Motions and Loads on a Container Ship with Forward Speed" class="work-thumbnail" src="https://attachments.academia-assets.com/118053178/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677443/A_New_Model_Uncertainty_Measure_of_Wave_Induced_Motions_and_Loads_on_a_Container_Ship_with_Forward_Speed">A New Model Uncertainty Measure of Wave-Induced Motions and Loads on a Container Ship with Forward Speed</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">A new uncertainty quantifier is presented for linear transfer functions of wave-induced ship moti...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">A new uncertainty quantifier is presented for linear transfer functions of wave-induced ship motions and loads obtained by various seakeeping codes. The numerical simulations are conducted for the high-speed Flokstra container ship in regular waves at various heading angles, and the results are compared with existing experimental data. The study employs five numerical codes that are based on three different seakeeping theories, namely strip theory, 3D frequency-domain method, and 3D time-domain method. Multiple measures are applied to quantify the uncertainty in the calculated transfer functions, such as frequency-independent model error, coefficient of determination, and the total difference. In addition, a new measure of uncertainty, termed modified total difference, is proposed for determining the uncertainty of individual seakeeping codes based on experimental data rather than the mean of results obtained by numerical codes. Results show that the uncertainty measures can identif...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="745e57cb794b96ed2f41c8df005ae692" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053178,"asset_id":123677443,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053178/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677443"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677443"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677443; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677442"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677442/Review_of_the_Decision_Support_Methods_Used_in_Optimizing_Ship_Hulls_towards_Improving_Energy_Efficiency"><img alt="Research paper thumbnail of Review of the Decision Support Methods Used in Optimizing Ship Hulls towards Improving Energy Efficiency" class="work-thumbnail" src="https://attachments.academia-assets.com/118053169/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677442/Review_of_the_Decision_Support_Methods_Used_in_Optimizing_Ship_Hulls_towards_Improving_Energy_Efficiency">Review of the Decision Support Methods Used in Optimizing Ship Hulls towards Improving Energy Efficiency</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper presents a review of the different methods and techniques used to optimize ship hulls ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper presents a review of the different methods and techniques used to optimize ship hulls over the last six years (2017–2022). This review shows the different percentages of reduction in ship resistance, and thus in the fuel consumption, to improve ships’ energy efficiency, towards achieving the goal of maritime decarbonization. Operational research and machine learning are the common decision support methods and techniques used to find the optimal solution. This paper covers four research areas to improve ship hulls, including hull form, hull structure, hull cleaning and hull lubrication. In each area of research, several computer programs are used, depending on the study’s complexity and objective. It has been found that no specific method is considered the optimum, while the combination of several methods can achieve more accurate results. Most of the research work is focused on the concept stage of ship design, while research on operational conditions has recently taken p...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="403354208c5cd44d91a6861e74c6d0f2" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053169,"asset_id":123677442,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053169/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677442"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677442"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677442; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677441"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677441/New_Wave_Energy_Converter_Design_Inspired_by_the_Nenuphar_Plant"><img alt="Research paper thumbnail of New Wave Energy Converter Design Inspired by the Nenuphar Plant" class="work-thumbnail" src="https://attachments.academia-assets.com/118053174/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677441/New_Wave_Energy_Converter_Design_Inspired_by_the_Nenuphar_Plant">New Wave Energy Converter Design Inspired by the Nenuphar Plant</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper presents the Nenuphar concept, an innovative wave energy converter designed to use the...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper presents the Nenuphar concept, an innovative wave energy converter designed to use the kinetic and the potential energy of sea waves, based on the motions of seven modules. First, the main characteristics of the Nenuphar and its work principle are presented. Afterwards, the mathematical formulation of its dynamics is introduced and its validation with a simplified device. A specific MATLAB code was developed to determine the dynamics of hinged, multi-directional bodies. Then, the system’s behaviour was analysed under different wave conditions. The system performance was not strongly dependent on the wave characteristics or the device inclination angle. This initial study confirms the Nenuphar as a potential technology to extract energy from waves.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="7baa925c48c4d6f07dfbac88e373b6e6" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053174,"asset_id":123677441,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053174/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677441"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677441"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677441; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677440"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677440/Mooring_System_Transport_and_Installation_Logistics_for_a_Floating_Offshore_Wind_Farm_in_Lannion_France"><img alt="Research paper thumbnail of Mooring System Transport and Installation Logistics for a Floating Offshore Wind Farm in Lannion, France" class="work-thumbnail" src="https://attachments.academia-assets.com/118053163/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677440/Mooring_System_Transport_and_Installation_Logistics_for_a_Floating_Offshore_Wind_Farm_in_Lannion_France">Mooring System Transport and Installation Logistics for a Floating Offshore Wind Farm in Lannion, France</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This study addresses the planning procedures for the installation of the mooring systems that sup...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This study addresses the planning procedures for the installation of the mooring systems that support the floating offshore wind turbines in a wind farm. It considers the logistics of the installation process and discusses the important role of the weather windows in the planning of those operations at a preliminary stage of the project. The case study is based on a wind farm array of 47 Telwind floating wind turbine platforms, to be located in Lannion (France), with a potential of 470 MW. The study includes the transport and logistics requirements of different mooring components, such as chains, connectors and drag anchors; the description of the installation operations considering the typology of vessels that are necessary in these manoeuvres; as well as the planning and costs associated with the transport and installation. Given the diversity of elements and operations involved in the installation procedure, it is demonstrated that the research results of duration and costs of th...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="89f3d5171c202fae21a73d13150dc550" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053163,"asset_id":123677440,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053163/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677440"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677440"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677440; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677439"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677439/Numerical_Study_on_the_Mooring_Force_in_an_Offshore_Fish_Cage_Array"><img alt="Research paper thumbnail of Numerical Study on the Mooring Force in an Offshore Fish Cage Array" class="work-thumbnail" src="https://attachments.academia-assets.com/118053164/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677439/Numerical_Study_on_the_Mooring_Force_in_an_Offshore_Fish_Cage_Array">Numerical Study on the Mooring Force in an Offshore Fish Cage Array</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span><span>, 2022</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The mooring force in a fish cage array subjected to currents and waves is investigated using the ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The mooring force in a fish cage array subjected to currents and waves is investigated using the finite element method. Firstly, the numerical model of a fish cage array with six gravity cages is built by Ansys/APDL. Collars and bottom rings are simulated with pipe and beam elements while the rest structure is simulated with link elements, including the net and mooring cables. Thus, the weight and hydrodynamic load on the cables can be considered. The initial shape of the mooring ropes is calculated based on mooring dynamics. Since each component is a slender structure in the cage array, the Morison equation is used to calculate the hydrodynamic load. Secondly, the mooring forces are assessed for the system in different sea states. The locations of the maximum mooring force on different parts in the mooring system are found. The mean values and amplitudes of maximum mooring forces on different parts are calculated. The main ropes have the maximum mooring forces under all sea states....</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="b24ff5bb2487e81482d018dcc673b6a7" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053164,"asset_id":123677439,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053164/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677439"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677439"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677439; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677438"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677438/Risk_Forecast_System_for_Moored_Ships"><img alt="Research paper thumbnail of Risk Forecast System for Moored Ships" class="work-thumbnail" src="https://attachments.academia-assets.com/118053161/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677438/Risk_Forecast_System_for_Moored_Ships">Risk Forecast System for Moored Ships</a></div><div class="wp-workCard_item"><span>Coastal Engineering Proceedings</span><span>, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Port terminals downtimes lead to large economic losses and largely affect the port&#39;s overall ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Port terminals downtimes lead to large economic losses and largely affect the port&#39;s overall competitiveness. In the majority of cases, port activities such as ships&#39; approach maneuvers and loading/unloading operations, are conditioned or suspended, based solely on weather or wave forecasts. These forecasts do not always result in effective hazardous conditions for the ships. Additionally, moored ships often experience problems of excessive movements and mooring forces in apparent good weather conditions. If, instead, one could forecast the ships&#39; movements and mooring forces, risk assessment would be much more accurate. This would allow selecting an appropriate reinforced mooring arrangement and thus minimizing effective terminal downtime. In this paper, the development of a risk forecast system for moored ships, that takes into account all of the moored ship&#39;s system, is detailed and an illustration on how it applies to real ports is presented.Recorded Presentation...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="384a4e8b664e470572843d0240362f3a" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053161,"asset_id":123677438,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053161/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677438"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677438"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677438; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "384a4e8b664e470572843d0240362f3a" } } $('.js-work-strip[data-work-id=123677438]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":123677438,"title":"Risk Forecast System for Moored Ships","internal_url":"https://www.academia.edu/123677438/Risk_Forecast_System_for_Moored_Ships","owner_id":31885502,"coauthors_can_edit":true,"owner":{"id":31885502,"first_name":"Carlos","middle_initials":"","last_name":"Guedes Soares","page_name":"CarlosGuedesSoares","domain_name":"xn--til-7na","created_at":"2015-06-04T19:00:08.286-07:00","display_name":"Carlos Guedes Soares","url":"https://xn--til-7na.academia.edu/CarlosGuedesSoares"},"attachments":[{"id":118053161,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/118053161/thumbnails/1.jpg","file_name":"9392.pdf","download_url":"https://www.academia.edu/attachments/118053161/download_file","bulk_download_file_name":"Risk_Forecast_System_for_Moored_Ships.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/118053161/9392-libre.pdf?1725814661=\u0026response-content-disposition=attachment%3B+filename%3DRisk_Forecast_System_for_Moored_Ships.pdf\u0026Expires=1739826298\u0026Signature=QWq1QmddAHCD0zkOVGDuOiQSeP0LtoUvmdicIBpqoaZjhkUnhyTCaQMc6ObUj6qpG-Ajg2gjngviub9mxlrVcCqWJPw7n58wBvmJnoLAhF7pYLbRWDt4fmRm9DD9JUoe2nTNxRGviRPwQHeDRN~4q3SWoOc14APmegDP-KXvHOBIj3kg4NmiwZxwf9G45q09bJiwmlUrVxjwOWGQiJpKCfXc1A6Pf65mrjSkuXG7fZ18ioLzKu8qB~i7OIgFUst4IxBda9NNxr~j27YdZ2VaihS4HnTfTFVG-VBPj2sN2DUGqx~Z1z8gatkNvngE03tN0bESEJ71H6A-feutOSUwiQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"},{"id":118053160,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/118053160/thumbnails/1.jpg","file_name":"9392.pdf","download_url":"https://www.academia.edu/attachments/118053160/download_file","bulk_download_file_name":"Risk_Forecast_System_for_Moored_Ships.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/118053160/9392-libre.pdf?1725814661=\u0026response-content-disposition=attachment%3B+filename%3DRisk_Forecast_System_for_Moored_Ships.pdf\u0026Expires=1739826298\u0026Signature=eULGTYXcDcHQFuVHm~QUlmX28o5rRDaIi-hK~Yop2NhxjaXil3m3ulFWyFmT0NNpM6Av2cMoreFSwrNNYyCUuMdsRKlxhVH9skZWXy-Szdmh6KSBeT0lZJVabPRqKhntPOzxtK9gTWxc43NXulYPJvwKJqqfh2knCo2Lgd3Jv2uUXMp8mBM2Rr3CMV-irgq7SU~UdVGfcZTRZNyJvDOipB1DAcVt3pO0GTsIaCxNeSF5cY46cUMI321eiAJ3S8KD1q5sIHtnGTWQkHOTow3T8hybsHhagrO-QyFMULfISXYyUGD6fVEEz~CRAIuaVbQko8Qxif84eQsY7zuwsaHObQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677437"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677437/A_benchmarking_exercise_for_environmental_contours"><img alt="Research paper thumbnail of A benchmarking exercise for environmental contours" class="work-thumbnail" src="https://attachments.academia-assets.com/118053204/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677437/A_benchmarking_exercise_for_environmental_contours">A benchmarking exercise for environmental contours</a></div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Environmental contours are used to simplify the process of design response analysis. A wide varie...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Environmental contours are used to simplify the process of design response analysis. A wide variety of contour methods exist; however, there have been a very limited number of comparisons of these methods to date. This paper is the output of an open benchmarking exercise, in which contributors developed contours based on their preferred methods and submitted them for a blind comparison study. The exercise had two componentsone, focusing on the robustness of contour methods across different offshore sites and, the other, focusing on characterizing sampling uncertainty. Nine teams of researchers contributed to the benchmark. The analysis of the submitted contours highlighted significant differences between contours derived via different methods. For example, the highest wave height value along a contour varied by as much as a factor of two between some submissions while the number of metocean data points or observations that fell outside a contour deviated by an order of magnitude between the contributions (even for contours with a return period shorter than the duration of the record). These differences arose from both different joint distribution models and different contour construction methods, however, variability from joint distribution models appeared to be higher than variability from contour construction methods.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="d2ec1592cfeb4662c71324e8620f188e" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053204,"asset_id":123677437,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053204/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677437"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677437"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677437; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677436"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677436/Condition_Based_Maintenance_for_Offshore_Wind_Turbines_Based_on_Support_Vector_Machine"><img alt="Research paper thumbnail of Condition-Based Maintenance for Offshore Wind Turbines Based on Support Vector Machine" class="work-thumbnail" src="https://attachments.academia-assets.com/118053159/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677436/Condition_Based_Maintenance_for_Offshore_Wind_Turbines_Based_on_Support_Vector_Machine">Condition-Based Maintenance for Offshore Wind Turbines Based on Support Vector Machine</a></div><div class="wp-workCard_item"><span>Energies</span><span>, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">A condition-based maintenance policy for offshore wind turbines is presented in consideration of ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">A condition-based maintenance policy for offshore wind turbines is presented in consideration of the maintenance uncertainty and the weather effect. In this paper, the offshore wind turbine is divided into four main assemblies—namely, the rotor, gearbox, generator, and pitch system. The support vector machine classification technique is implemented to analyze the failure information, which was collected from field data in China. According to the results of fault diagnosis and prediction, the assembly that reaches the corresponding maintenance threshold will be repaired. At the same time, a maintenance opportunity occurs for the rest of the components, and an optimized plan can be determined by arranging the maintenance combination and time. The calculated results indicate that the proposed condition-based maintenance policy is beneficial to reduce the maintenance expenditure of offshore wind turbines.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5e4009f16ae8e1c5a1527ae79d34ae82" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053159,"asset_id":123677436,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053159/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677436"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677436"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677436; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677434"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677434/Estimation_of_directional_sea_spectra_from_ship_motions_in_sea_trials"><img alt="Research paper thumbnail of Estimation of directional sea spectra from ship motions in sea trials" class="work-thumbnail" src="https://attachments.academia-assets.com/118053202/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677434/Estimation_of_directional_sea_spectra_from_ship_motions_in_sea_trials">Estimation of directional sea spectra from ship motions in sea trials</a></div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, 2017</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper compares the skill of two algorithms that enable real-time estimation of the direction...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper compares the skill of two algorithms that enable real-time estimation of the directional wave spectra exciting a ship from its measured motions. One algorithm consists of a nonlinear optimization of a parametric or non-parametric spectral model and the other is a Kalman filter based observer. Sea trials have been conducted on an oceanographic vessel that was instrumented with a six degree of freedom fibre optic gyro, complemented with a rate gyro, several accelerometers, a dedicated GPS receiver and a bow mounted downlooking wave radar with motion compensation. The two algorithms are applied to the measured data and a discussion is provided on their skill to recover the properties of existing sea states.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3308cb7431368b00b0e232a5ef8c2dd8" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053202,"asset_id":123677434,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053202/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677434"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677434"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677434; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677433"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677433/Experimental_and_numerical_study_of_the_vertical_motions_of_a_bulk_carrier_and_a_Ro_Ro_ship_in_extreme_waves"><img alt="Research paper thumbnail of Experimental and numerical study of the vertical motions of a bulk carrier and a Ro–Ro ship in extreme waves" class="work-thumbnail" src="https://attachments.academia-assets.com/118053157/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677433/Experimental_and_numerical_study_of_the_vertical_motions_of_a_bulk_carrier_and_a_Ro_Ro_ship_in_extreme_waves">Experimental and numerical study of the vertical motions of a bulk carrier and a Ro–Ro ship in extreme waves</a></div><div class="wp-workCard_item"><span>Journal of Ocean Engineering and Marine Energy</span><span>, 2015</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper investigates the experimental and numerical vertical motion responses of a bulk carrie...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper investigates the experimental and numerical vertical motion responses of a bulk carrier and a Roll-on/Roll-off ship in extreme seas. The experimental data were obtained from seakeeping tests with scaled models in head waves at two Froude numbers. The wave traces were predefined, corresponding to wave records measured during storms in the North Sea. These wave records are particularly interesting because each of them include one abnormal wave. The ship models, which are similar in length but different in their geometry, were tested in the same predefined wave conditions to investigate the influence of the hull geometry on the extreme vertical ship responses. Conclusions are derived by comparing directly the measured responses from the two models. Experimental data are also used as benchmark to validate the predictions by a partially nonlinear time domain seakeeping numerical model. The numerical model code is then used to generalize the comparative analysis between the two ships. Keywords Ship motions • Extreme waves • Nonlinear motions • Bulk carrier • Ro-Ro • Model tests</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="83567c5fcd6be9d7045e29add8a3e06d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053157,"asset_id":123677433,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053157/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677433"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677433"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677433; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677432"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677432/Time_frequency_analysis_of_the_sea_state_with_the_Andrea_freak_wave"><img alt="Research paper thumbnail of Time-frequency analysis of the sea state with the "Andrea" freak wave" class="work-thumbnail" src="https://attachments.academia-assets.com/118053200/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677432/Time_frequency_analysis_of_the_sea_state_with_the_Andrea_freak_wave">Time-frequency analysis of the sea state with the "Andrea" freak wave</a></div><div class="wp-workCard_item"><span>Natural Hazards and Earth System Sciences Discussions</span><span>, 2014</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The nonlinear and nonstationary properties of a special field wave record are analysed with the W...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The nonlinear and nonstationary properties of a special field wave record are analysed with the Wigner spectrum with the Choi-Williams kernel. The wave time series, which was recorded at the Ekofisk complex in the central North Sea at 00:40 UTC (universal time coordinated) on 9 November 2007, contains an abnormally high wave known as the "Andrea" wave. The ability of the Wigner spectrum to reveal the wave energy distribution in frequency and time is demonstrated. The results are compared with previous investigations for different sea states and also the state with Draupner's abnormal "New Year" wave.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2d8f15c7740e36be6551a0ae50613b6a" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053200,"asset_id":123677432,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053200/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677432"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677432"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677432; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677431"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677431/Dynamic_analysis_of_spar_type_floating_offshore_wind_turbine"><img alt="Research paper thumbnail of Dynamic analysis of spar type floating offshore wind turbine" class="work-thumbnail" src="https://attachments.academia-assets.com/118053201/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677431/Dynamic_analysis_of_spar_type_floating_offshore_wind_turbine">Dynamic analysis of spar type floating offshore wind turbine</a></div><div class="wp-workCard_item"><span>Edition 2, Tanger, Maroc</span><span>, 2011</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">In the present study, a coupled dynamic analysis of NREL 5MW Spar-type floating wind turbine is p...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In the present study, a coupled dynamic analysis of NREL 5MW Spar-type floating wind turbine is presented. The turbine design variables used in the analysis are the hub height of 90 m above the mean sea level, rotor diameter of 126 m and maximum rotor speed of 12.1 rpm. Hydrodynamic added mass, damping and exiting force are obtained in frequency domain using WAMIT and are validated with the result obtained for OC3 Hywind. The hydrodynamic study of the floater is combined with the FAST code to obtain a coupled aero-servo-hydro-elastic model. The spar-type floating wind turbine is considered to be connected with delta connection three mooring lines, and the mooring lines are fixed at bottom. The tower base motions and platform motions are obtained for wind speed 3.7 m/s with 4m wave height and 0º wave heading angle.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2d2fcb5694ad18d31af28df5ef2a6758" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118053201,"asset_id":123677431,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118053201/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677431"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677431"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677431; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123677430"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123677430/European_Research_in_Marine_Structures"><img alt="Research paper thumbnail of European Research in Marine Structures" class="work-thumbnail" src="https://attachments.academia-assets.com/118073299/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123677430/European_Research_in_Marine_Structures">European Research in Marine Structures</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">An overview is presented of the results obtained in Europe by a network with a large number of re...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">An overview is presented of the results obtained in Europe by a network with a large number of research groups in the field of Marine Structures during a period of 6 years. The European Union has funded a project aimed at improving the collaboration among European research groups specialized in marine structures, which has led, among other results to a number of benchmark studies organized in 6 main topical areas, namely, Methods and Tools for Loads and Load Effects, Methods and Tools for Strength Assessment, Experimental Analysis of Structures, Materials and Fabrication of Structures, Methods and Tools for Structural Design and Optimization and Structural Reliability, Safety and Environmental Protection. This paper presents an overview of various studies performed, which helps identifying the level of consistency and robustness of different numeric tools used in this field.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="015f459305fd341208f4b23764be61a4" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118073299,"asset_id":123677430,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118073299/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123677430"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123677430"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123677430; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656865"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656865/Non_Gaussian_Statistics_of_Mechanically_Generated_Unidirectional_Irregular_Waves"><img alt="Research paper thumbnail of Non-Gaussian Statistics of Mechanically Generated Unidirectional Irregular Waves" class="work-thumbnail" src="https://attachments.academia-assets.com/118037527/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656865/Non_Gaussian_Statistics_of_Mechanically_Generated_Unidirectional_Irregular_Waves">Non-Gaussian Statistics of Mechanically Generated Unidirectional Irregular Waves</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Application</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">An experimental study is presented on the non-Gaussian statistics of random unidirectional labora...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">An experimental study is presented on the non-Gaussian statistics of random unidirectional laboratory wave fields described by JONSWAP spectra. Relationships between statistical parameters indicative of the occurrence of large-amplitude waves are discussed in the context of the initial steepness of the waves combined with the effect of spectral peakedness. The spatial evolution of the relevant statistical and spectral parameters and features is also considered. It is demonstrated that over the distance the spectra exhibit features typical for developing nonlinear instabilities, such as spectral broadening and downshift of the peak, along with lowering of the high-frequency tail and decrease of the peak magnitude. The wave fields clearly show an increase of third-order nonlinearity with the distance, which can be significant, depending on the input wave environment. The steeper initial conditions, however, while favouring the occurrence of extremely large waves, also increase the cha...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="6634d762418e6a4e80d650226091c9bc" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037527,"asset_id":123656865,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037527/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656865"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656865"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656865; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656864"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656864/Hydrodynamic_Analysis_of_the_WIND_Bos_Spar_Floating_Offshore_Wind_Turbine"><img alt="Research paper thumbnail of Hydrodynamic Analysis of the WIND-Bos Spar Floating Offshore Wind Turbine" class="work-thumbnail" src="https://attachments.academia-assets.com/118037526/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656864/Hydrodynamic_Analysis_of_the_WIND_Bos_Spar_Floating_Offshore_Wind_Turbine">Hydrodynamic Analysis of the WIND-Bos Spar Floating Offshore Wind Turbine</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The WIND-bos spar Floating Offshore Wind Turbine is studied both experimentally and numerically. ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The WIND-bos spar Floating Offshore Wind Turbine is studied both experimentally and numerically. The experimental model of the moored WIND-bos platform is presented, and the different numerical models that have been developed to analyze the hydrodynamics of the platform are described. The results provide a detailed comparison of numerical and experimental motion responses of the floating structure in regular and irregular waves. The numerical study includes frequency domain results from spectral analysis, weakly nonlinear time-domain results from a validated in-house code, and coupled time-domain results from commercial software. The importance of damping calibration is put in evidence, whereas damping ratios are calculated iteratively in the coupled time-domain simulations, and nonlinear damping force is considered within the developed numerical scheme. The results compare well and also show that the novel concept has a good motion performance in general.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3601ffe6add1bc1f4b656291406becc9" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037526,"asset_id":123656864,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037526/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656864"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656864"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656864; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656863"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656863/A_Comprehensive_Approach_to_Account_for_Weather_Uncertainties_in_Ship_Route_Optimization"><img alt="Research paper thumbnail of A Comprehensive Approach to Account for Weather Uncertainties in Ship Route Optimization" class="work-thumbnail" src="https://attachments.academia-assets.com/118037521/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656863/A_Comprehensive_Approach_to_Account_for_Weather_Uncertainties_in_Ship_Route_Optimization">A Comprehensive Approach to Account for Weather Uncertainties in Ship Route Optimization</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This work aims at defining in a probabilistic manner objectives and constraints typically conside...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This work aims at defining in a probabilistic manner objectives and constraints typically considered in route optimization systems. Information about weather-related uncertainties is introduced by adopting ensemble forecast results. Classical reliability methods commonly used in structural analysis are adopted, allowing to achieve a simple yet effective evaluation of the probability of failure and the variability associated with the predicted fuel consumption and time of arrival. A quantitative example of application is provided, taking into consideration one of the main North Atlantic routes.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="8c132d2153633a85e81d7df2129847d5" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037521,"asset_id":123656863,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037521/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656863"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656863"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656863; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656862"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656862/Review_and_Prospects_for_Autonomous_Observing_Systems_in_Vessels_of_Opportunity"><img alt="Research paper thumbnail of Review and Prospects for Autonomous Observing Systems in Vessels of Opportunity" class="work-thumbnail" src="https://attachments.academia-assets.com/118037518/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656862/Review_and_Prospects_for_Autonomous_Observing_Systems_in_Vessels_of_Opportunity">Review and Prospects for Autonomous Observing Systems in Vessels of Opportunity</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper focuses on the state of the art on Autonomous Observing Systems (AOS) used in Vessels ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper focuses on the state of the art on Autonomous Observing Systems (AOS) used in Vessels of Opportunity (VOO) for collecting in situ atmospheric, oceanic and biogeochemical data. The designation Vessels of Opportunity includes all kinds of ships, even if not having scientific goals, which may carry proper devices that autonomously measure environmental variables. These vessels can be merchant, military, research, cruise liners, fishing, ferries, or even private yachts or sailing boats. The use of AOS can provide the opportunity for highly refined oceanographic data and improved derived data estimation, for local, regional or global scales studies. However, making the collected information accessible, both for scientific and technical purposes, provides a challenge in data management and analysis, which must, above all, ensure trusted useful data to the stakeholders. An overall review of the systems implemented is presented. This includes the definition of objectives, the rec...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="64048ecf123c72f98dad91095195b5e8" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037518,"asset_id":123656862,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037518/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656862"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656862"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656862; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656861"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656861/On_the_experimental_study_of_a_concentric_wave_energy_array_adapted_to_an_offshore_floating_platform"><img alt="Research paper thumbnail of On the experimental study of a concentric wave energy array adapted to an offshore floating platform" class="work-thumbnail" src="https://attachments.academia-assets.com/118037532/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656861/On_the_experimental_study_of_a_concentric_wave_energy_array_adapted_to_an_offshore_floating_platform">On the experimental study of a concentric wave energy array adapted to an offshore floating platform</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Experimental results of the dynamics of a small scale concentric wave energy converter array adap...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Experimental results of the dynamics of a small scale concentric wave energy converter array adapted to a floating offshore platform are presented. A small scale prototype is tested without and with twelve conical heaving point absorbers. The free decay and regular wave tests are carried out in an ocean basin to understand the hydrodynamic interactions between various elements of the floating offshore platform and wave energy converter array. Meanwhile, the heave motions of the buoys are observed in regular waves with and without dampers for the initial estimation of power take-off damping as a pitch control module. The results show the improvements in heave, pitch, and roll performance of the platform due to the interactio n between the buoys and platform.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2b6ed19e5bbcc6b4758d8c5829e927d1" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037532,"asset_id":123656861,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037532/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656861"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656861"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656861; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656860"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656860/Neural_Network_Approach_for_Predicting_Ship_Speed_and_Fuel_Consumption"><img alt="Research paper thumbnail of Neural Network Approach for Predicting Ship Speed and Fuel Consumption" class="work-thumbnail" src="https://attachments.academia-assets.com/118037524/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656860/Neural_Network_Approach_for_Predicting_Ship_Speed_and_Fuel_Consumption">Neural Network Approach for Predicting Ship Speed and Fuel Consumption</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">In this paper, simulations of a ship travelling on a given oceanic route were performed by a weat...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In this paper, simulations of a ship travelling on a given oceanic route were performed by a weather routing system to provide a large realistic navigation data set, which could represent a collection of data obtained on board a ship in operation. This data set was employed to train a neural network computing system in order to predict ship speed and fuel consumption. The model was trained using the Levenberg–Marquardt backpropagation scheme to establish the relation between the ship speed and the respective propulsion configuration for the existing sea conditions, i.e., the output torque of the main engine, the revolutions per minute of the propulsion shaft, the significant wave height, and the peak period of the waves, together with the relative angle of wave encounter. Additional results were obtained by also using the model to train the relationship between the same inputs used to determine the speed of the ship and the fuel consumption. A sensitivity analysis was performed to a...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="1a5ded5d9dd2a724b0b3b32d6e920b1b" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037524,"asset_id":123656860,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037524/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656860"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656860"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656860; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="123656859"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/123656859/Impact_of_Extratropical_Cyclone_Intensity_and_Speed_on_the_Extreme_Wave_Trends_in_the_Atlantic_Ocean"><img alt="Research paper thumbnail of Impact of Extratropical Cyclone Intensity and Speed on the Extreme Wave Trends in the Atlantic Ocean" class="work-thumbnail" src="https://attachments.academia-assets.com/118037537/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/123656859/Impact_of_Extratropical_Cyclone_Intensity_and_Speed_on_the_Extreme_Wave_Trends_in_the_Atlantic_Ocean">Impact of Extratropical Cyclone Intensity and Speed on the Extreme Wave Trends in the Atlantic Ocean</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This work analyzes the extratropical cyclone-related extreme waves in the ocean surface and their...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This work analyzes the extratropical cyclone-related extreme waves in the ocean surface and their trends in the North and South Atlantic Oceans. Atmospheric and ocean wave products are obtained from ERA5, from 1979 to 2020 with 1-hourly outputs, covering 42 years with the present climate changes evaluated by the difference between the two 21-years time slices. The cyclones are tracked through the relative vorticity at 850 hPa and then associated with extreme wave events using an automated scheme that searches for an extreme wave region 1500 km from the centre of the cyclone, following criteria that exclude possible swell dominated events. The hot-spot regions of cyclone-related waves occurrence found by the method are in agreement with previous studies and are related to the cyclogenesis region and storm track orientation. Most cyclones associated with extreme wave events are generated in the western boundary of the domains. The east-poleward side of the ocean basins presents the hi...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="9d9d56ad43593e38d320357eda7ea529" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":118037537,"asset_id":123656859,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/118037537/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="123656859"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="123656859"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 123656859; 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