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class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon 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free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Type of boat or ship having only one hull</div> <figure class="mw-default-size mw-halign-right" typeof="mw:File"><a href="/wiki/File:Monohull.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Monohull.svg/159px-Monohull.svg.png" decoding="async" width="159" height="545" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Monohull.svg/239px-Monohull.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/72/Monohull.svg/318px-Monohull.svg.png 2x" data-file-width="159" data-file-height="545" /></a><figcaption></figcaption></figure> <p>A <b>monohull</b> is a type of boat having only one <a href="/wiki/Hull_(watercraft)" title="Hull (watercraft)">hull</a>, unlike <a href="/wiki/Multihull" title="Multihull">multihulled</a> boats which can have two or more individual hulls connected to one another. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Fundamental_concept">Fundamental concept</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Monohull&action=edit&section=1" title="Edit section: Fundamental concept"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Among the earliest hulls were simple logs, but these were generally unstable and tended to roll over easily. Hollowing out the logs into a dugout canoe doesn't help much unless the hollow section penetrates below the log's center of buoyancy, then a load carried low in the cavity actually stabilizes the craft. Adding weight or <a href="/wiki/Sailing_ballast" class="mw-redirect" title="Sailing ballast">ballast</a> to the bottom of the hull or as low as possible within the hull adds stability. </p><p>Naval architects place the center of gravity substantially below the center of <a href="/wiki/Buoyancy" title="Buoyancy">buoyancy</a>; in most cases this can only be achieved by adding weight or ballast. The use of stones and other weights as ballast can be traced back to the <a href="/wiki/Ancient_Rome" title="Ancient Rome">Romans</a>, <a href="/wiki/Phoenicians" class="mw-redirect" title="Phoenicians">Phoenicians</a> and <a href="/wiki/Vikings" title="Vikings">Vikings</a>. Modern ships carry tons of ballast in order to maintain their stability; even heavily laden cargo ships use ballast to optimize the distribution of weight. </p> <div class="mw-heading mw-heading2"><h2 id="Uses">Uses</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Monohull&action=edit&section=2" title="Edit section: Uses"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>This is the most prevalent form of waterborne vessel. </p> <div class="mw-heading mw-heading2"><h2 id="Variations">Variations</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Monohull&action=edit&section=3" title="Edit section: Variations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Keel" title="Keel">Keels</a> - Most <a href="/wiki/Sailing_ships" class="mw-redirect" title="Sailing ships">sailing ships</a> and larger <a href="/wiki/Sailboats" class="mw-redirect" title="Sailboats">sailboats</a> have deep <a href="/wiki/Keel" title="Keel">keels</a> containing <a href="/wiki/Sailing_ballast" class="mw-redirect" title="Sailing ballast">ballast</a> which adds horizontal stabilility.</li> <li><a href="/wiki/Hull_(watercraft)" title="Hull (watercraft)">Displacement hulls</a> - Monohull boats frequently ride deeply in the water, this is known as a displacement hull.</li> <li><a href="/wiki/Planing_(sailing)" class="mw-redirect" title="Planing (sailing)">Planing hulls</a> - Hulls that ride on top of the water are called planing hulls, because when they reach speed, the hulls are substantially lifted above the water; this is known as planing (to plane).</li></ul> <div class="mw-heading mw-heading2"><h2 id="References_and_bibliography">References and bibliography</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Monohull&action=edit&section=4" title="Edit section: References and bibliography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> </div> <ul><li><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFJim_Howard,_Charles_J._Doane2000" class="citation book cs1">Jim Howard, Charles J. Doane (2000). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=NB4uFQuUlnEC"><i>Handbook of offshore cruising: The Dream and Reality of Modern Ocean Cruising</i></a>. Sheridan House, Inc. p. 280. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-57409-093-3" title="Special:BookSources/1-57409-093-3"><bdi>1-57409-093-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+offshore+cruising%3A+The+Dream+and+Reality+of+Modern+Ocean+Cruising&rft.pages=280&rft.pub=Sheridan+House%2C+Inc.&rft.date=2000&rft.isbn=1-57409-093-3&rft.au=Jim+Howard%2C+Charles+J.+Doane&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DNB4uFQuUlnEC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMonohull" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFC._A._Marchaj2000" class="citation book cs1">C. A. Marchaj (2000). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=KYUDAAAACAAJ&q=Aero-hydrodynamics+of+Sailing"><i>Aero-Hydrodynamics of Sailing</i></a>. Tiller Publishing. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-888671-18-1" title="Special:BookSources/1-888671-18-1"><bdi>1-888671-18-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Aero-Hydrodynamics+of+Sailing&rft.pub=Tiller+Publishing&rft.date=2000&rft.isbn=1-888671-18-1&rft.au=C.+A.+Marchaj&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DKYUDAAAACAAJ%26q%3DAero-hydrodynamics%2Bof%2BSailing&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMonohull" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFC._A._Marchaj" class="citation book cs1">C. A. Marchaj. <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Z7JIAAAACAAJ&q=Sail+Performance"><i>Sail Performance</i></a>. McGraw Hill. p. 400. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-07-141310-3" title="Special:BookSources/0-07-141310-3"><bdi>0-07-141310-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Sail+Performance&rft.pages=400&rft.pub=McGraw+Hill&rft.isbn=0-07-141310-3&rft.au=C.+A.+Marchaj&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DZ7JIAAAACAAJ%26q%3DSail%2BPerformance&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMonohull" class="Z3988"></span><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged April 2020">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFC._A._Marchaj" class="citation book cs1">C. A. Marchaj. <a rel="nofollow" class="external text" href="https://books.google.com/books?id=uLz2IAAACAAJ&q=seaworthiness"><i>Seaworthiness:The Forgotten Factor</i></a>. Tiller Publishing. p. 372. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-888671-09-2" title="Special:BookSources/1-888671-09-2"><bdi>1-888671-09-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Seaworthiness%3AThe+Forgotten+Factor&rft.pages=372&rft.pub=Tiller+Publishing&rft.isbn=1-888671-09-2&rft.au=C.+A.+Marchaj&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DuLz2IAAACAAJ%26q%3Dseaworthiness&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMonohull" class="Z3988"></span><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged April 2020">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Monohull&action=edit&section=5" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Sailing" title="Sailing">Sailing</a></li> <li><a href="/wiki/Yachts" class="mw-redirect" title="Yachts">Yachts</a></li> <li><a href="/wiki/Sailboats" class="mw-redirect" title="Sailboats">Sailboats</a></li> <li><a href="/wiki/Multihull" title="Multihull">Multihull</a></li> <li><a href="/wiki/Keel" title="Keel">Keel</a></li> <li><a href="/wiki/Displacement_(fluid)" title="Displacement (fluid)">Displacement (fluid)</a></li> <li><a href="/wiki/Displacement_hull" class="mw-redirect" title="Displacement hull">Displacement hull</a></li> <li><a href="/wiki/Hydrodynamics" class="mw-redirect" title="Hydrodynamics">Hydrodynamics</a></li> <li><a href="/wiki/Buoyancy" title="Buoyancy">Buoyancy</a></li> 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