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data-dom-id="Pill-react-component-bedfed12-be01-48fc-a2f0-2d53641b2229"></div> <div id="Pill-react-component-bedfed12-be01-48fc-a2f0-2d53641b2229"></div> </a></div></div><div class="external-links-container"><ul class="profile-links new-profile js-UserInfo-social"><li class="profile-profiles js-social-profiles-container"><i class="fa fa-spin fa-spinner"></i></li></ul></div></div></div><div class="right-panel-container"><div class="user-content-wrapper"><div class="uploads-container" id="social-redesign-work-container"><div class="upload-header"><h2 class="ds2-5-heading-sans-serif-xs">Uploads</h2></div><div class="documents-container backbone-social-profile-documents" 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="Conference Presentations" id="Conference Presentations"><h3 class="profile--tab_heading_container">Conference Presentations by Bart Boon</h3></div><div class="js-work-strip profile--work_container" data-work-id="35129143"><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/35129143/ASPECTS_OF_THE_ANALYSIS_OF_STRUCTURE_AND_STRENGTH_OF_PRE_HISTORIC_WATERCRAFT"><img alt="Research paper thumbnail of ASPECTS OF THE ANALYSIS OF STRUCTURE AND STRENGTH OF PRE-HISTORIC WATERCRAFT" class="work-thumbnail" src="https://attachments.academia-assets.com/54990659/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/35129143/ASPECTS_OF_THE_ANALYSIS_OF_STRUCTURE_AND_STRENGTH_OF_PRE_HISTORIC_WATERCRAFT">ASPECTS OF THE ANALYSIS OF STRUCTURE AND STRENGTH OF PRE-HISTORIC WATERCRAFT</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/BartBoon">Bart Boon</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/EelcovanRietbergen">Eelco van Rietbergen</a></span></div><div class="wp-workCard_item"><span>Ronald Bockius: Between the Seas. Transfer and Exchange in Nautical Technology, </span><span>, 2006</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Any ship or boat has to comply with a variety of requirements. Some of these come from the owner,...</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">Any ship or boat has to comply with a variety of requirements. Some of these come from the owner, such as those related to the cargo capacity. Other requirements are physical in nature such as stability: a boat should not capsize. The strength of the ship belongs to the latter group: a boat should be strong enough to reliably operate in its intended conditions. Some of the few publications in this respect are Hausen (1979), Coates (1985; 1994), Jensen (1999) and Fenger & Valbj酶rn (2003). Owain Roberts (2004) followed similar lines when he used naval architecture to interpret the Dover boat find and thus set a clear course on how naval architectural knowledge may assist the interpretation of archaeological finds. The present paper continues on the basis laid by Roberts. The rather small number of publications on the subject may be the result of an assumption that when remains of a boat are found, probably the vessel was strong enough when in existence, thus denying the relevance of any further analysis of the structure. The present paper will present some of the principles of structural analysis and show how this may assist in interpreting boat remains and may indicate open questions. Two subjects are used for illustration: the longitudinal strength of the Dover boat and the transverse strength of dug-outs. SOME ASPECTS OF SHIP STRENGTH IN GENERAL A ship during her life is subjected to a large variety of different loads. Some are simple such as the weight of the vessel and its cargo. Others are more complex such as the load from slamming waves. Some loads effect the ship as a whole. For example those, that keep the vessel in an upright position or those, that lead to ship motions. Simultaneously, these loads cause straining of the vessel leading to deformations of the structure and concomitant internal stresses. The ship structure should remain intact under such loads and not fail or leak. It is this latter type of loads and responses that are the subject of the present paper. In ancient wooden ships the connection between individual structural elements, such as shell planks and frames whether sewn, nailed, pegged or otherwise, is rather loose. The vessel may be analysed in its entirety acting as one unit, just as any modern steel ship. All material deforms somewhat but the boundaries between individual elements do not allow any movement. This is what is called the elastic response of a homogeneous structure. However, at the same time the loose connections, such as the stitches in the sewn Dover boat, due to sliding, straining of the fibres or other may lead to deformations of similar magnitude as the elastic deformations. Analysis of ancient ships must take these effects into account. LONGITUDINAL BENDING OF THE HULL GIRDER Most authors tackling the strength of ancient boats and ships did so using the standard longitudinal strength assessment as used for modern ships. According to Archimedes, the total weight of any ship must equal the weight of the displaced water. Neither weight nor displacement is uniformly distributed along the length of the ship's hull. In some loca-377 Aspects of the Analysis of Structure and Strength of PreHistoric Watercraft 路 Boon 路 van Rietbergen</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="abf14b4ba235702e607f3e7cb4798adb" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":54990659,"asset_id":35129143,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/54990659/download_file?st=MTczMjgyNTg0Myw4LjIyMi4yMDguMTQ2&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="35129143"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="35129143"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 35129143; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=35129143]").text(description); $(".js-view-count[data-work-id=35129143]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 35129143; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='35129143']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 35129143, container: "", }); });</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-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.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); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "abf14b4ba235702e607f3e7cb4798adb" } } $('.js-work-strip[data-work-id=35129143]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":35129143,"title":"ASPECTS OF THE ANALYSIS OF STRUCTURE AND STRENGTH OF PRE-HISTORIC WATERCRAFT","translated_title":"","metadata":{"abstract":"Any ship or boat has to comply with a variety of requirements. 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From naval gigantism of Chinese Ming Dynasty to universal physics in a seaway</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The length of Zheng He's vessels (15th century) are suggested to be well beyond the maximum of wo...</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 length of Zheng He's vessels (15th century) are suggested to be well beyond the maximum of wooden ships as found in the Western world also in later centuries. This paper aims to explain the technical limits to the length of wooden ships.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="815970ed66a903d3c60ce6bb4bed8ad7" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":53294504,"asset_id":33216498,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/53294504/download_file?st=MTczMjgyNTg0Myw4LjIyMi4yMDguMTQ2&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="33216498"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="33216498"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 33216498; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=33216498]").text(description); $(".js-view-count[data-work-id=33216498]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 33216498; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='33216498']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 33216498, container: "", }); });</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-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.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); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "815970ed66a903d3c60ce6bb4bed8ad7" } } $('.js-work-strip[data-work-id=33216498]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":33216498,"title":"WHAT LIMITS THE DIMENSIONS OF WOODEN SHIPS? 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This paper aims to explain the technical limits to the length of wooden ships.","internal_url":"https://www.academia.edu/33216498/WHAT_LIMITS_THE_DIMENSIONS_OF_WOODEN_SHIPS_From_naval_gigantism_of_Chinese_Ming_Dynasty_to_universal_physics_in_a_seaway","translated_internal_url":"","created_at":"2017-05-27T02:51:30.615-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":3365756,"coauthors_can_edit":true,"document_type":"draft","co_author_tags":[],"downloadable_attachments":[{"id":53294504,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/53294504/thumbnails/1.jpg","file_name":"Zheng_He_Published_paper_version_2017.pdf","download_url":"https://www.academia.edu/attachments/53294504/download_file?st=MTczMjgyNTg0Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"WHAT_LIMITS_THE_DIMENSIONS_OF_WOODEN_SHI.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/53294504/Zheng_He_Published_paper_version_2017-libre.pdf?1495878965=\u0026response-content-disposition=attachment%3B+filename%3DWHAT_LIMITS_THE_DIMENSIONS_OF_WOODEN_SHI.pdf\u0026Expires=1732829443\u0026Signature=eS2NKU1~MN9MEYNF9V7cvizuwv1~jdvcE2BGlF38A4dopvKFNl9z76eoKOu6Yus6vmCB0YvkrrIIMyvw7uLelqRie~pAAuZjh1A3vgOyMi6ZqbfbDATCKP3Z1XUL3eqpl0dZ5Q9LioSBtL1SpKAvIqdox-3r3z6TZTQozYfMu6OiyONq0AjGs-oCeqEybRzoegvLQ1YoYHn3cUejDLs7mEDcUBYEFLEp8XvoONjBVq~-8Vmqv3agMm1n2xMQRmY24kmIC0uI3QmmZMeG6flqFbRc7Bf8AJodJ27QkguxG7JnOryNH7iHEVXu3gs3F9Jl0g9fPKSk45c7D7SMVEHGuw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"WHAT_LIMITS_THE_DIMENSIONS_OF_WOODEN_SHIPS_From_naval_gigantism_of_Chinese_Ming_Dynasty_to_universal_physics_in_a_seaway","translated_slug":"","page_count":20,"language":"en","content_type":"Work","owner":{"id":3365756,"first_name":"Bart","middle_initials":null,"last_name":"Boon","page_name":"BartBoon","domain_name":"independent","created_at":"2013-02-24T19:20:20.591-08:00","display_name":"Bart Boon","url":"https://independent.academia.edu/BartBoon"},"attachments":[{"id":53294504,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/53294504/thumbnails/1.jpg","file_name":"Zheng_He_Published_paper_version_2017.pdf","download_url":"https://www.academia.edu/attachments/53294504/download_file?st=MTczMjgyNTg0Myw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"WHAT_LIMITS_THE_DIMENSIONS_OF_WOODEN_SHI.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/53294504/Zheng_He_Published_paper_version_2017-libre.pdf?1495878965=\u0026response-content-disposition=attachment%3B+filename%3DWHAT_LIMITS_THE_DIMENSIONS_OF_WOODEN_SHI.pdf\u0026Expires=1732829443\u0026Signature=eS2NKU1~MN9MEYNF9V7cvizuwv1~jdvcE2BGlF38A4dopvKFNl9z76eoKOu6Yus6vmCB0YvkrrIIMyvw7uLelqRie~pAAuZjh1A3vgOyMi6ZqbfbDATCKP3Z1XUL3eqpl0dZ5Q9LioSBtL1SpKAvIqdox-3r3z6TZTQozYfMu6OiyONq0AjGs-oCeqEybRzoegvLQ1YoYHn3cUejDLs7mEDcUBYEFLEp8XvoONjBVq~-8Vmqv3agMm1n2xMQRmY24kmIC0uI3QmmZMeG6flqFbRc7Bf8AJodJ27QkguxG7JnOryNH7iHEVXu3gs3F9Jl0g9fPKSk45c7D7SMVEHGuw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":30137,"name":"Nautical Archaeology","url":"https://www.academia.edu/Documents/in/Nautical_Archaeology"}],"urls":[]}, dispatcherData: dispatcherData }); $(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="7038502" id="conferencepresentations"><div class="js-work-strip profile--work_container" data-work-id="35129143"><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/35129143/ASPECTS_OF_THE_ANALYSIS_OF_STRUCTURE_AND_STRENGTH_OF_PRE_HISTORIC_WATERCRAFT"><img alt="Research paper thumbnail of ASPECTS OF THE ANALYSIS OF STRUCTURE AND STRENGTH OF PRE-HISTORIC WATERCRAFT" class="work-thumbnail" src="https://attachments.academia-assets.com/54990659/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/35129143/ASPECTS_OF_THE_ANALYSIS_OF_STRUCTURE_AND_STRENGTH_OF_PRE_HISTORIC_WATERCRAFT">ASPECTS OF THE ANALYSIS OF STRUCTURE AND STRENGTH OF PRE-HISTORIC WATERCRAFT</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/BartBoon">Bart Boon</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/EelcovanRietbergen">Eelco van Rietbergen</a></span></div><div class="wp-workCard_item"><span>Ronald Bockius: Between the Seas. Transfer and Exchange in Nautical Technology, </span><span>, 2006</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Any ship or boat has to comply with a variety of requirements. Some of these come from the owner,...</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">Any ship or boat has to comply with a variety of requirements. Some of these come from the owner, such as those related to the cargo capacity. Other requirements are physical in nature such as stability: a boat should not capsize. The strength of the ship belongs to the latter group: a boat should be strong enough to reliably operate in its intended conditions. Some of the few publications in this respect are Hausen (1979), Coates (1985; 1994), Jensen (1999) and Fenger & Valbj酶rn (2003). Owain Roberts (2004) followed similar lines when he used naval architecture to interpret the Dover boat find and thus set a clear course on how naval architectural knowledge may assist the interpretation of archaeological finds. The present paper continues on the basis laid by Roberts. The rather small number of publications on the subject may be the result of an assumption that when remains of a boat are found, probably the vessel was strong enough when in existence, thus denying the relevance of any further analysis of the structure. The present paper will present some of the principles of structural analysis and show how this may assist in interpreting boat remains and may indicate open questions. Two subjects are used for illustration: the longitudinal strength of the Dover boat and the transverse strength of dug-outs. SOME ASPECTS OF SHIP STRENGTH IN GENERAL A ship during her life is subjected to a large variety of different loads. Some are simple such as the weight of the vessel and its cargo. Others are more complex such as the load from slamming waves. Some loads effect the ship as a whole. For example those, that keep the vessel in an upright position or those, that lead to ship motions. Simultaneously, these loads cause straining of the vessel leading to deformations of the structure and concomitant internal stresses. The ship structure should remain intact under such loads and not fail or leak. It is this latter type of loads and responses that are the subject of the present paper. In ancient wooden ships the connection between individual structural elements, such as shell planks and frames whether sewn, nailed, pegged or otherwise, is rather loose. The vessel may be analysed in its entirety acting as one unit, just as any modern steel ship. All material deforms somewhat but the boundaries between individual elements do not allow any movement. This is what is called the elastic response of a homogeneous structure. However, at the same time the loose connections, such as the stitches in the sewn Dover boat, due to sliding, straining of the fibres or other may lead to deformations of similar magnitude as the elastic deformations. Analysis of ancient ships must take these effects into account. LONGITUDINAL BENDING OF THE HULL GIRDER Most authors tackling the strength of ancient boats and ships did so using the standard longitudinal strength assessment as used for modern ships. According to Archimedes, the total weight of any ship must equal the weight of the displaced water. Neither weight nor displacement is uniformly distributed along the length of the ship's hull. In some loca-377 Aspects of the Analysis of Structure and Strength of PreHistoric Watercraft 路 Boon 路 van Rietbergen</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="abf14b4ba235702e607f3e7cb4798adb" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":54990659,"asset_id":35129143,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/54990659/download_file?st=MTczMjgyNTg0Myw4LjIyMi4yMDguMTQ2&st=MTczMjgyNTg0Myw4LjIyMi4yMDguMTQ2&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="35129143"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="35129143"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 35129143; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=35129143]").text(description); $(".js-view-count[data-work-id=35129143]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 35129143; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='35129143']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 35129143, container: "", }); });</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-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.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); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "abf14b4ba235702e607f3e7cb4798adb" } } $('.js-work-strip[data-work-id=35129143]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":35129143,"title":"ASPECTS OF THE ANALYSIS OF STRUCTURE AND STRENGTH OF PRE-HISTORIC WATERCRAFT","translated_title":"","metadata":{"abstract":"Any ship or boat has to comply with a variety of requirements. 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The present paper will present some of the principles of structural analysis and show how this may assist in interpreting boat remains and may indicate open questions. Two subjects are used for illustration: the longitudinal strength of the Dover boat and the transverse strength of dug-outs. SOME ASPECTS OF SHIP STRENGTH IN GENERAL A ship during her life is subjected to a large variety of different loads. Some are simple such as the weight of the vessel and its cargo. Others are more complex such as the load from slamming waves. Some loads effect the ship as a whole. For example those, that keep the vessel in an upright position or those, that lead to ship motions. Simultaneously, these loads cause straining of the vessel leading to deformations of the structure and concomitant internal stresses. The ship structure should remain intact under such loads and not fail or leak. It is this latter type of loads and responses that are the subject of the present paper. 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According to Archimedes, the total weight of any ship must equal the weight of the displaced water. Neither weight nor displacement is uniformly distributed along the length of the ship's hull. In some loca-377 Aspects of the Analysis of Structure and Strength of PreHistoric Watercraft 路 Boon 路 van Rietbergen","publication_date":{"day":null,"month":null,"year":2006,"errors":{}},"publication_name":"Ronald Bockius: Between the Seas. Transfer and Exchange in Nautical Technology, "},"translated_abstract":"Any ship or boat has to comply with a variety of requirements. Some of these come from the owner, such as those related to the cargo capacity. Other requirements are physical in nature such as stability: a boat should not capsize. The strength of the ship belongs to the latter group: a boat should be strong enough to reliably operate in its intended conditions. 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From naval gigantism of Chinese Ming Dynasty to universal physics in a seaway" class="work-thumbnail" src="https://attachments.academia-assets.com/53294504/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/33216498/WHAT_LIMITS_THE_DIMENSIONS_OF_WOODEN_SHIPS_From_naval_gigantism_of_Chinese_Ming_Dynasty_to_universal_physics_in_a_seaway">WHAT LIMITS THE DIMENSIONS OF WOODEN SHIPS? From naval gigantism of Chinese Ming Dynasty to universal physics in a seaway</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The length of Zheng He's vessels (15th century) are suggested to be well beyond the maximum of wo...</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 length of Zheng He's vessels (15th century) are suggested to be well beyond the maximum of wooden ships as found in the Western world also in later centuries. 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