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data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Boom_attachment" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Boom_attachment"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Boom attachment</span> </div> </a> <ul id="toc-Boom_attachment-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lines_on_the_boom" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Lines_on_the_boom"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Lines on the boom</span> </div> </a> <ul id="toc-Lines_on_the_boom-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Boom_material_and_hardware" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Boom_material_and_hardware"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Boom material and hardware</span> </div> </a> <ul id="toc-Boom_material_and_hardware-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-In-boom_furling" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#In-boom_furling"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>In-boom furling</span> </div> </a> <ul id="toc-In-boom_furling-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Boom_safety_concerns" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Boom_safety_concerns"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Boom safety concerns</span> </div> </a> <ul id="toc-Boom_safety_concerns-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-New_boat_designs_to_lower_boom_risks" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#New_boat_designs_to_lower_boom_risks"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>New boat designs to lower boom risks</span> </div> </a> <ul id="toc-New_boat_designs_to_lower_boom_risks-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Other_boom_uses" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Other_boom_uses"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Other boom uses</span> </div> </a> <ul id="toc-Other_boom_uses-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Other_boom_types" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Other_boom_types"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Other boom types</span> </div> </a> <button aria-controls="toc-Other_boom_types-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Other boom types subsection</span> </button> <ul id="toc-Other_boom_types-sublist" class="vector-toc-list"> <li id="toc-Flexible_boom" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Flexible_boom"> <div class="vector-toc-text"> <span class="vector-toc-numb">8.1</span> <span>Flexible boom</span> </div> </a> <ul id="toc-Flexible_boom-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Park_Avenue_boom" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Park_Avenue_boom"> <div class="vector-toc-text"> <span class="vector-toc-numb">8.2</span> <span>Park Avenue boom</span> </div> </a> <ul id="toc-Park_Avenue_boom-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliography" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliography"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Bibliography</span> </div> </a> <ul id="toc-Bibliography-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Further_reading" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Further_reading"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>Further reading</span> </div> </a> <ul id="toc-Further_reading-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" 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href="https://bg.wikipedia.org/wiki/%D0%93%D0%B8%D0%BA" title="Гик – Bulgarian" lang="bg" hreflang="bg" data-title="Гик" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Botavara" title="Botavara – Catalan" lang="ca" hreflang="ca" data-title="Botavara" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Bom_(skibsteknologi)" title="Bom (skibsteknologi) – Danish" lang="da" hreflang="da" data-title="Bom (skibsteknologi)" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Baum_(Segeln)" title="Baum (Segeln) – German" lang="de" hreflang="de" data-title="Baum (Segeln)" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Botavara" title="Botavara – Spanish" lang="es" hreflang="es" data-title="Botavara" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Bumo_(vel%C5%9Dipo)" title="Bumo (velŝipo) – Esperanto" lang="eo" hreflang="eo" data-title="Bumo (velŝipo)" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/B%C3%B4me" title="Bôme – French" lang="fr" hreflang="fr" data-title="Bôme" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Retranca" title="Retranca – Galician" lang="gl" hreflang="gl" data-title="Retranca" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Pekaki_layar" title="Pekaki layar – Indonesian" lang="id" hreflang="id" data-title="Pekaki layar" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/B%C3%B3ma" title="Bóma – Icelandic" lang="is" hreflang="is" data-title="Bóma" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Boma" title="Boma – Italian" lang="it" hreflang="it" data-title="Boma" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%A0%D7%95%D7%A8_(%D7%A1%D7%A4%D7%A0%D7%95%D7%AA)" title="מנור (ספנות) – Hebrew" lang="he" hreflang="he" data-title="מנור (ספנות)" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Giek" title="Giek – Dutch" lang="nl" hreflang="nl" data-title="Giek" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Bom_(skipsterminologi)" title="Bom (skipsterminologi) – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Bom (skipsterminologi)" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Bom" title="Bom – Polish" lang="pl" hreflang="pl" data-title="Bom" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Retranca" title="Retranca – Portuguese" lang="pt" hreflang="pt" data-title="Retranca" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%93%D0%B8%D0%BA" title="Гик – Russian" lang="ru" hreflang="ru" data-title="Гик" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Bom" title="Bom – Swedish" lang="sv" hreflang="sv" data-title="Bom" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Bumba" title="Bumba – Turkish" lang="tr" hreflang="tr" data-title="Bumba" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%93%D1%96%D0%BA_(%D0%BC%D0%BE%D1%80%D1%81%D1%8C%D0%BA%D0%B8%D0%B9_%D1%82%D0%B5%D1%80%D0%BC%D1%96%D0%BD)" title="Гік (морський термін) – Ukrainian" lang="uk" hreflang="uk" data-title="Гік (морський термін)" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q811491#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div 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<button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the 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">In sailing, a spar along the bottom edge of a fore and aft rigged sail</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">This article is about the pole on sailboats. For the sailboat type, a type of dhow, see <a href="/wiki/Boom_(ship)" title="Boom (ship)">Boom (ship)</a>. For other uses, see <a href="/wiki/Boom_(disambiguation)" class="mw-redirect mw-disambig" title="Boom (disambiguation)">Boom</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Relevant discussion may be found on the <a href="/wiki/Talk:Boom_(sailing)#Talk_page_section_Citations" title="Talk:Boom (sailing)">talk page</a>. Please help <a href="/wiki/Special:EditPage/Boom_(sailing)" title="Special:EditPage/Boom (sailing)">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Boom%22+sailing">"Boom" sailing</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Boom%22+sailing+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Boom%22+sailing&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Boom%22+sailing+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Boom%22+sailing">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Boom%22+sailing&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">February 2022</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Boom_(Sailing).svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/96/Boom_%28Sailing%29.svg/300px-Boom_%28Sailing%29.svg.png" decoding="async" width="300" height="155" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/96/Boom_%28Sailing%29.svg/450px-Boom_%28Sailing%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/96/Boom_%28Sailing%29.svg/600px-Boom_%28Sailing%29.svg.png 2x" data-file-width="660" data-file-height="340" /></a><figcaption><b>1 – boom</b>, 2 – mast, 3 – gooseneck, 4 – sail, 5 – topping lift... 7 – mainsheet, 8 – boom vang...</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Rigging-boom.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/42/Rigging-boom.png/250px-Rigging-boom.png" decoding="async" width="250" height="108" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/42/Rigging-boom.png/375px-Rigging-boom.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/42/Rigging-boom.png/500px-Rigging-boom.png 2x" data-file-width="714" data-file-height="308" /></a><figcaption></figcaption></figure> <p>In <a href="/wiki/Sailing" title="Sailing">sailing</a>, a <b>boom</b> is a <a href="/wiki/Spar_(sailing)" title="Spar (sailing)">spar</a> (pole), along the <style data-mw-deduplicate="TemplateStyles:r1038841319">.mw-parser-output .tooltip-dotted{border-bottom:1px dotted;cursor:help}</style><span class="rt-commentedText tooltip tooltip-dotted" title="bottom edge">foot</span> of a <a href="/wiki/Fore_and_aft" class="mw-redirect" title="Fore and aft">fore and aft</a> rigged <a href="/wiki/Sail" title="Sail">sail</a>, that greatly improves control of the angle and shape of the sail. The primary action of the boom is to keep the <i>foot</i> flatter when the sail angle is away from the centerline of the boat. The boom also serves as an attachment point for more sophisticated control lines. Because of the improved sail control it is rare to find a non-<a href="/wiki/Headsail" class="mw-redirect" title="Headsail">headsail</a> without a boom, but <a href="/wiki/Lateen_sail" class="mw-redirect" title="Lateen sail">lateen sails</a>, for instance, are loose-footed. In some modern applications, the sail is rolled up into the boom for storage or <a href="/wiki/Reefing" title="Reefing">reefing</a> (shortening sail). </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Boom_attachment">Boom attachment</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=1" title="Edit section: Boom attachment"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The forward end of the boom attaches to a <a href="/wiki/Mast_(sailing)" title="Mast (sailing)">mast</a> just below the sail, with a joint called the <a href="/wiki/Gooseneck_(sailing)" title="Gooseneck (sailing)">gooseneck</a>. The gooseneck pivots allowing the other end of the boom to move freely. The <a href="/wiki/Parts_of_a_sail#Corners" class="mw-redirect" title="Parts of a sail">clew</a> (back corner) of the sail attaches to the free end of the boom. The entire <i>foot</i> of the sail may be attached to the boom or just the clew. If the <i>foot</i> is not attached to the boom, the rig is known as <b>loose footed</b>. </p><p>A boom may be found on small <a href="/wiki/Headsails" class="mw-redirect" title="Headsails">headsails</a>. There the forward end of the boom is attached to the same <a href="/wiki/Stays_(nautical)" title="Stays (nautical)">stay</a> as the sail's <a href="/wiki/Parts_of_a_sail#Edges" class="mw-redirect" title="Parts of a sail">luff</a> (forward edge). </p> <div class="mw-heading mw-heading2"><h2 id="Lines_on_the_boom">Lines on the boom</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=2" title="Edit section: Lines on the boom"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The control lines (ropes) on the boom act in conjunction with the <a href="/wiki/Halyard" title="Halyard">halyard</a> and <a href="/wiki/Sail_components#Edge_construction" title="Sail components">leech line</a> to ensure that the sail is trimmed most effectively. </p><p>Two primary sail control lines are attached to every boom: </p> <ul><li>The <a href="/wiki/Outhaul" title="Outhaul">outhaul</a> runs from the <a href="/wiki/Parts_of_a_sail#Corners" class="mw-redirect" title="Parts of a sail">clew</a> of the sail to the free end of the boom. Hauling in on (tightening) the outhaul increases <i>foot</i> tension in the main sail. Modern loose footed sails are cut so that the outhaul is also able to pull the clew downwards towards the boom.</li> <li>The <a href="/wiki/Sheet_(sailing)" title="Sheet (sailing)">sheet</a> is attached midway along the boom or at the free end, typically by means of a <a href="/wiki/Block_(sailing)" title="Block (sailing)">block</a>. The block is typically attached to the boom by means of a bail, which is a U-shaped piece of metal, flattened at the ends to allow attachment with screws or rivets. In smaller boats such as dinghies it is used to control the angle of the sail to the wind on each point of sail. On largest boats this function is largely assumed by the traveller and the main sheet is used to adjust the twist of the sail to present the <a href="/wiki/Parts_of_a_sail#Edges" class="mw-redirect" title="Parts of a sail">luff</a> of the sail to the wind all of the way up the mast. Easing the main sheet increases twist and the twist is usually adjusted so that the aft end of the top <a href="/wiki/Batten" title="Batten">batten</a> in the main sail runs parallel to the boom. The <a href="/wiki/Mechanical_traveller" class="mw-redirect" title="Mechanical traveller">traveller</a> is a track running from one side of the boat to the other upon which sits a car to which the other end of the sheet is attached. Moving the car from side to side alters the angle of the boom to the centreline of the boat while minimising the effect on the twist of the sail.</li></ul> <p>A boom will frequently have these additional sail control lines attached: </p> <ul><li>A <a href="/wiki/Downhaul" title="Downhaul">downhaul</a> may be attached to the boom near the gooseneck to pull the boom down and increase tension on the <a href="/wiki/Parts_of_a_sail#Edges" class="mw-redirect" title="Parts of a sail">luff</a> (forward edge) of the sail. If no downhaul is present, the gooseneck is usually fixed vertically to the mast and a <a href="/wiki/Cunningham_(sailing)" title="Cunningham (sailing)">cunningham</a> may be used to control luff tension.</li> <li>The <a href="/wiki/Boom_vang" title="Boom vang">boom vang</a>, kicking strap or kicker is an intricate set of pulleys (and, on yachts, a hydraulic ram) running diagonally between the boom and the lower portion of the mast. The kicker pulls the boom downwards. When the boat is running away from the wind the sheet will be fully eased and so the kicker becomes the primary means of controlling sail twist.</li> <li>The <a href="/wiki/Preventer" title="Preventer">preventer</a>, prevents the boom from jibing. This line is run from a point on the boom to a point forward such as a deck cleat or the base of a stanchion. Ideally, the preventer should run from the aft end of the boom to a turning block at or very close to the bow and then back to a cleat convenient to the cockpit. The line does not take tremendous force if used properly, but it prevents the boom from starting a jibe if the wind shifts or the boat rolls. Sophisticated form of preventer is a <a href="/wiki/Boom_Brake" class="mw-redirect" title="Boom Brake">boom brake</a>, which not only prevents unwanted jibes, but allows a slow measured jibe by modulating the tension on the brake.</li> <li><a href="/wiki/Reefing" title="Reefing">Reef Lines</a>, are used to tie-off excess sail, when sails are <a href="/wiki/Reefing" title="Reefing">reefed</a> (shortened). Some modern systems known as "jiffy reefing" or "slab reefing" have permanent lines running through the boom for purposes of reefing. Pulling on these lines helps to gather the excess sail at the bottom of the boom, and to secure the reef points to the fore and aft of the boom. With a well designed system sailors can reef the sails without leaving the cockpit.</li></ul> <p>Other lines that may be found on a boom include: </p> <ul><li>A <a href="/wiki/Topping_lift" title="Topping lift">topping lift</a>, holds up the free end of the boom when the sail is lowered.</li> <li><a href="/wiki/Lazy_jack" title="Lazy jack">Lazy jacks</a> guide the sail onto the top of the boom for <a href="/wiki/Furl_(sailing)" title="Furl (sailing)">furling</a> when the sail is lowered.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Boom_material_and_hardware">Boom material and hardware</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=3" title="Edit section: Boom material and hardware"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Traditionally booms, and other spars, were made of wood. Classic wooden hulled sailboats, both old and new, will usually have wooden spars. When <a href="/wiki/Aluminium" title="Aluminium">aluminium</a> became available, it was adopted for sailboat spars. Aluminium spars are lighter and stronger than their wooden counterpart, require less maintenance and generally hold up better to marine conditions. Aluminium spars are usually associated with fibreglass boats, although one can still find a few early fibreglass hulled yachts that were equipped with wooden spars. On very large sailing vessels, the spars may be steel. Modern, high performance, racing yachts may have spars constructed of more expensive materials, such as <a href="/wiki/Carbon_fibre" class="mw-redirect" title="Carbon fibre">carbon fibre</a>. </p><p>Various hardware is found attached to the boom. The hardware could include <a href="/wiki/Fairleads" class="mw-redirect" title="Fairleads">fairleads</a>, <a href="/wiki/Block_(sailing)" title="Block (sailing)">blocks</a>, block tracks, and <a href="/wiki/Cleat_(nautical)" title="Cleat (nautical)">cleats</a>. For attachment, screws are used on wooden booms and screws or <a href="/wiki/Rivets" class="mw-redirect" title="Rivets">rivets</a> on aluminium booms. If the foot of the sail is attached to the boom, there may be hoops from the foot of the sail, around the boom, or there may be a track on the top of the boom into which fittings on the foot of the sail are slid. </p> <div class="mw-heading mw-heading2"><h2 id="In-boom_furling">In-boom furling</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=4" title="Edit section: In-boom furling"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There are quite a few variations of <a href="/w/index.php?title=In-boom_furling&action=edit&redlink=1" class="new" title="In-boom furling (page does not exist)">in-boom furling</a> available. Generally the boom is hollow with a spindle in the center upon which the sail is rolled (furled). The techniques for turning the spindle vary, but frequently a line is used to spin the spindle and recover or reef the sail. In most cases the sail can be full battened and has virtually infinite reefing options. Some sailors consider this approach safer than in-mast furling, since the sail can be lowered and flaked in the traditional method, in the case of mechanical failure. In most applications, the sail can be lowered or reefed from the cockpit. Most designs will not accommodate a <a href="/w/index.php?title=Loose-footed_mainsail&action=edit&redlink=1" class="new" title="Loose-footed mainsail (page does not exist)">loose-footed mainsail</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Boom_safety_concerns">Boom safety concerns</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=5" title="Edit section: Boom safety concerns"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The second leading cause of death on sailboats is directly attributed to the use of booms.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Booms can cause injuries directly, sweep people overboard, and their associated hardware and lines represent tripping hazards. On larger boats, sailors tend to stand on the boom to perform sail maintenance and install or take off sail covers. Falls from the boom onto the deck below occur. Even when stationary, booms represent a hazard since on most boats there is insufficient headroom to walk below them without ducking. According to a German study, "boom strikes were the most common cause of sailing injury overall".<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>When boom injuries occur far from shore they can require expensive rescues. In 2010 the US Coast Guard and Air National Guard utilized a <a href="/wiki/Lockheed_C-130_Hercules" title="Lockheed C-130 Hercules">Lockheed C-130 Hercules</a> aircraft to rescue a man from 1400 miles off the Mexican coast.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Deaths and injuries can occur on boats operating upon lakes and coastal waters.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p><p>As a precaution, any sailboat with a low boom should mandate use of <a href="/wiki/Life_jacket" class="mw-redirect" title="Life jacket">life jackets</a>, and ensure others know how to obtain assistance and operate the craft. In Boston a sailor knocked overboard by the boom died in full sight of the land and other boats and the person left aboard didn't know how to use the radio.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="New_boat_designs_to_lower_boom_risks">New boat designs to lower boom risks</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=6" title="Edit section: New boat designs to lower boom risks"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>To address the dangers associated with the boom, some designers have raised the boom higher off the deck or applied padding. However, these raise the <a href="/wiki/Center_of_gravity" class="mw-redirect" title="Center of gravity">center of gravity</a> and increase the chances of <a href="/wiki/Capsizing" title="Capsizing">capsizing</a> and <a href="/wiki/Turtling_(sailing)" title="Turtling (sailing)">turtling</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>Some designers have addressed the issue by eliminating the boom completely. Classic types of sail like the <a href="/wiki/Square_rig" title="Square rig">square rig</a> or the <a href="/wiki/Lug_sail#Types" title="Lug sail">standing lugsail</a> have always worked without booms. Modern alternatives without a boom are the <a href="/wiki/Mast_aft_rig" class="mw-redirect" title="Mast aft rig">mast aft rig</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Other_boom_uses">Other boom uses</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=7" title="Edit section: Other boom uses"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>On an open <a href="/wiki/Cockpit_(sailing)" title="Cockpit (sailing)">cockpit</a> sailboat at a <a href="/wiki/Mooring_(watercraft)" class="mw-redirect" title="Mooring (watercraft)">mooring</a>, a <a href="/wiki/Tarpaulin" title="Tarpaulin">tarpaulin</a> may be run over the boom and tied to the rails to form a tent over the cockpit. </p><p>In certain situations on larger boats, the boom can be used as a crane to help lift aboard heavy items like a <a href="/wiki/Dinghy" title="Dinghy">dinghy</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Other_boom_types">Other boom types</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=8" title="Edit section: Other boom types"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Flexible_boom">Flexible boom</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=9" title="Edit section: Flexible boom"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When the foot of a sail is attached along its whole length to a boom, the stiffness of the boom tends to hold the lower part of the sail flat.<sup id="cite_ref-dear67_11-0" class="reference"><a href="#cite_note-dear67-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-v162_12-0" class="reference"><a href="#cite_note-v162-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> However, the greatest aerodynamic efficiency of the sail is created when the sail is allowed to curve into an <a href="/wiki/Airfoil" title="Airfoil">airfoil</a>-like shape.<sup id="cite_ref-dear67_11-1" class="reference"><a href="#cite_note-dear67-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-v162_12-1" class="reference"><a href="#cite_note-v162-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> A flexible boom bends with the sail to create this greater efficiency. </p> <div class="mw-heading mw-heading3"><h3 id="Park_Avenue_boom">Park Avenue boom</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=10" title="Edit section: Park Avenue boom"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A "Park Avenue" boom allows for the same aerodynamic curvature as a flexible boom, but is a rigid construction with a flat surface on top.<sup id="cite_ref-dear67_11-2" class="reference"><a href="#cite_note-dear67-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-v163_13-0" class="reference"><a href="#cite_note-v163-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Instead of being fastened directly to the boom, the foot of the sail is fastened to fittings that slot into grooves that run transversely across the boom.<sup id="cite_ref-dear67_11-3" class="reference"><a href="#cite_note-dear67-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-v163_13-1" class="reference"><a href="#cite_note-v163-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> As these fittings move within their grooves, the foot of the sail is free to curve.<sup id="cite_ref-dear67_11-4" class="reference"><a href="#cite_note-dear67-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-v163_13-2" class="reference"><a href="#cite_note-v163-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> It takes its name from the great width of such a boom fitted to the yacht <i><a href="/wiki/Enterprise_(yacht)" title="Enterprise (yacht)">Enterprise</a></i> for the <a href="/wiki/1930_America%27s_Cup" title="1930 America's Cup">1930 America's Cup</a> competition, a hyperbolic comparison to the width of <a href="/wiki/Park_Avenue" title="Park Avenue">Park Avenue</a>.<sup id="cite_ref-dear67_11-5" class="reference"><a href="#cite_note-dear67-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-v164_14-0" class="reference"><a href="#cite_note-v164-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </p> <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=Boom_(sailing)&action=edit&section=11" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Wishbone_boom" class="mw-redirect" title="Wishbone boom">Wishbone boom</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Bibliography">Bibliography</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=12" title="Edit section: Bibliography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></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="CITEREFDear2004" class="citation book cs1">Dear, Ian (2004). <i><span></span></i>Enterprise<i> to </i>Endeavour<i>: the J-Class Yachts</i>. London: Adlard Coles Nautical.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Enterprise+to+Endeavour%3A+the+J-Class+Yachts&rft.place=London&rft.pub=Adlard+Coles+Nautical&rft.date=2004&rft.aulast=Dear&rft.aufirst=Ian&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVanderbilt1931" class="citation book cs1"><a href="/wiki/Harold_Stirling_Vanderbilt" title="Harold Stirling Vanderbilt">Vanderbilt, Harold Stirling</a> (1931). <i>Enterprise: The Story of the Defense of the America's Cup in 1930</i>. New York: Charles Scribner's Sons.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Enterprise%3A+The+Story+of+the+Defense+of+the+America%27s+Cup+in+1930&rft.place=New+York&rft.pub=Charles+Scribner%27s+Sons&rft.date=1931&rft.aulast=Vanderbilt&rft.aufirst=Harold+Stirling&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=13" title="Edit section: References"><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 reflist-columns references-column-width reflist-columns-2"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAndrew_NathansonGlenn_Hebel" class="citation web cs1">Andrew Nathanson; Glenn Hebel. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110928184354/http://www.lifespan.org/services/travel/sailing_injuries.htm">"Sailing Injuries"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.lifespan.org/services/travel/sailing_injuries.htm">the original</a> on September 28, 2011.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Sailing+Injuries&rft.au=Andrew+Nathanson&rft.au=Glenn+Hebel&rft_id=http%3A%2F%2Fwww.lifespan.org%2Fservices%2Ftravel%2Fsailing_injuries.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTator2008" class="citation book cs1">Tator, Charles H. (December 27, 2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=o9Qd4E8NFvoC&pg=PA143"><i>Catastrophic injuries in sports and recreation: causes and prevention: A Canadian Study</i></a>. Toronto, Ontario: <a href="/wiki/University_of_Toronto_Press" title="University of Toronto Press">University of Toronto Press</a>, Scholarly Publishing Division. p. 143. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0802089670" title="Special:BookSources/978-0802089670"><bdi>978-0802089670</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Catastrophic+injuries+in+sports+and+recreation%3A+causes+and+prevention%3A+A+Canadian+Study&rft.place=Toronto%2C+Ontario&rft.pages=143&rft.pub=University+of+Toronto+Press%2C+Scholarly+Publishing+Division&rft.date=2008-12-27&rft.isbn=978-0802089670&rft.aulast=Tator&rft.aufirst=Charles+H.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Do9Qd4E8NFvoC%26pg%3DPA143&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20140116105049/http://www.bwsailing.com/BWS_newsandnotes_Sailor-Injured-In-Accidental-Gibe-Rescued-In-Pacific.html">"Sailor Injured In Accidental Gibe Rescued In Pacific"</a>. <i>Blue Water Sailing</i>. May 16, 2010. Archived from <a rel="nofollow" class="external text" href="http://www.bwsailing.com/BWS_newsandnotes_Sailor-Injured-In-Accidental-Gibe-Rescued-In-Pacific.html">the original</a> on January 16, 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">January 16,</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Blue+Water+Sailing&rft.atitle=Sailor+Injured+In+Accidental+Gibe+Rescued+In+Pacific&rft.date=2010-05-16&rft_id=http%3A%2F%2Fwww.bwsailing.com%2FBWS_newsandnotes_Sailor-Injured-In-Accidental-Gibe-Rescued-In-Pacific.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRichardson2010" class="citation journal cs1">Richardson, Tom (June 30 – September 9, 2010). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140116140712/http://boatinglocal.com/videos/coast-guard-airlifts-injured-man-from-sailboat-off-nantucket.html">"Coast Guard Airlifts Injured Man from Sailboat off Nantucket Coast Guard Airlifts Injured Man from Sailboat off Nantucket"</a>. <i>New England Boating</i>. Archived from <a rel="nofollow" class="external text" href="http://boatinglocal.com/videos/coast-guard-airlifts-injured-man-from-sailboat-off-nantucket.html">the original</a> on January 16, 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">January 15,</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=New+England+Boating&rft.atitle=Coast+Guard+Airlifts+Injured+Man+from+Sailboat+off+Nantucket+Coast+Guard+Airlifts+Injured+Man+from+Sailboat+off+Nantucket&rft.date=2010-06-30%2F2010-09-09&rft.aulast=Richardson&rft.aufirst=Tom&rft_id=http%3A%2F%2Fboatinglocal.com%2Fvideos%2Fcoast-guard-airlifts-injured-man-from-sailboat-off-nantucket.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://archive.chicagobreakingnews.com/2009/08/man-hit-by-sailboat-boom-critically-injured.html">"Man hit by sailboat boom, critically injured"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Man+hit+by+sailboat+boom%2C+critically+injured&rft_id=http%3A%2F%2Farchive.chicagobreakingnews.com%2F2009%2F08%2Fman-hit-by-sailboat-boom-critically-injured.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" 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 July 2017">permanent dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20101222171600/http://www.attorneyillinois.net/article-sailboat-accidents.aspx">"Attorney Advertisement Seeking Clients Owing To Boom Injuries"</a>. Friedman & Bonebrake. Archived from <a rel="nofollow" class="external text" href="http://www.attorneyillinois.net/article-sailboat-accidents.aspx">the original</a> on December 22, 2010.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Attorney+Advertisement+Seeking+Clients+Owing+To+Boom+Injuries&rft.pub=Friedman+%26+Bonebrake&rft_id=http%3A%2F%2Fwww.attorneyillinois.net%2Farticle-sailboat-accidents.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLochhaas2010" class="citation web cs1">Lochhaas, Tom (May 20, 2010). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140116133251/http://sailing.about.com/b/2010/05/20/the-importance-of-a-boom-preventer.htm">"The Importance Of The Boom Preventer"</a>. Archived from <a rel="nofollow" class="external text" href="http://sailing.about.com/b/2010/05/20/the-importance-of-a-boom-preventer.htm">the original</a> on January 16, 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">January 15,</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+Importance+Of+The+Boom+Preventer&rft.date=2010-05-20&rft.aulast=Lochhaas&rft.aufirst=Tom&rft_id=http%3A%2F%2Fsailing.about.com%2Fb%2F2010%2F05%2F20%2Fthe-importance-of-a-boom-preventer.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.boatsafe.com/nauticalknowhow/passenge.htm">"Passenger/Crew Orientation"</a>. BoatSafe.com<span class="reference-accessdate">. Retrieved <span class="nowrap">January 15,</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Passenger%2FCrew+Orientation&rft.pub=BoatSafe.com&rft_id=http%3A%2F%2Fwww.boatsafe.com%2Fnauticalknowhow%2Fpassenge.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20101127054902/http://sailingusa.info/design_winds.htm">"US Sailing Keelboat Course - Design and Stability"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.sailingusa.info/design_winds.htm">the original</a> on November 27, 2010.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=US+Sailing+Keelboat+Course+-+Design+and+Stability&rft_id=http%3A%2F%2Fwww.sailingusa.info%2Fdesign_winds.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.ybw.com/forums/showthread.php?t=9716">"Discussion thread on height of boom above deck"</a>. Yachting and Boating World Forums<span class="reference-accessdate">. Retrieved <span class="nowrap">January 16,</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Discussion+thread+on+height+of+boom+above+deck&rft.pub=Yachting+and+Boating+World+Forums&rft_id=http%3A%2F%2Fwww.ybw.com%2Fforums%2Fshowthread.php%3Ft%3D9716&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span></span> </li> <li id="cite_note-dear67-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-dear67_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-dear67_11-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-dear67_11-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-dear67_11-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-dear67_11-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-dear67_11-5"><sup><i><b>f</b></i></sup></a></span> <span class="reference-text">Dear 2004, p.67</span> </li> <li id="cite_note-v162-12"><span class="mw-cite-backlink">^ <a href="#cite_ref-v162_12-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-v162_12-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Vanderbilt 1931, p.162</span> </li> <li id="cite_note-v163-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-v163_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-v163_13-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-v163_13-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text">Vanderbilt 1931, p.163</span> </li> <li id="cite_note-v164-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-v164_14-0">^</a></b></span> <span class="reference-text">Vanderbilt 1931, p.164</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boom_(sailing)&action=edit&section=14" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRousmaniere1998" class="citation book cs1">Rousmaniere, John (June 1998). <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/illustrateddicti00rous"><i>The Illustrated Dictionary of Boating Terms: 2000 Essential Terms for Sailors and Powerboaters</i></a></span> (Paperback). <a href="/wiki/W._W._Norton_%26_Company" title="W. W. Norton & Company">W. W. Norton & Company</a>. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/illustrateddicti00rous/page/174">174</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0393339181" title="Special:BookSources/0393339181"><bdi>0393339181</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Illustrated+Dictionary+of+Boating+Terms%3A+2000+Essential+Terms+for+Sailors+and+Powerboaters&rft.pages=174&rft.pub=W.+W.+Norton+%26+Company&rft.date=1998-06&rft.isbn=0393339181&rft.aulast=Rousmaniere&rft.aufirst=John&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fillustrateddicti00rous&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoom+%28sailing%29" class="Z3988"></span> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0393339185" title="Special:BookSources/978-0393339185">978-0393339185</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist 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.navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Sails,_spars_and_rigging" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Sail_types" title="Template:Sail types"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Sail_types" title="Template talk:Sail types"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Sail_types" title="Special:EditPage/Template:Sail types"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Sails,_spars_and_rigging" style="font-size:114%;margin:0 4em"><a href="/wiki/Sail" title="Sail">Sails</a>, <a href="/wiki/Spar_(sailing)" title="Spar (sailing)">spars</a> and <a href="/wiki/Rigging" title="Rigging">rigging</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>including limited use<sup>*</sup>, outdated<sup>†</sup></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Rigs <br />(<a href="/wiki/Jury_rigging" title="Jury rigging">jury rigging</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Textile</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bermuda_rig" title="Bermuda rig">Bermuda</a></li> <li><a href="/wiki/B%26R_rig" title="B&R rig">B&R</a></li> <li><a href="/wiki/Cat_rigged" title="Cat rigged">Cat</a></li> <li><a href="/wiki/Fore-and-aft_rig" title="Fore-and-aft rig">Fore-and-aft</a></li> <li><a href="/wiki/Gaff_rig" title="Gaff rig">Gaff</a></li> <li><a href="/wiki/Gunter_rig" title="Gunter rig">Gunter</a></li> <li><a href="/wiki/Junk_rig" title="Junk rig">Junk</a><sup>*</sup></li> <li><a href="/wiki/Ljungstr%C3%B6m_rig" title="Ljungström rig">Ljungström</a></li> <li><a href="/wiki/Mast-aft_rig" title="Mast-aft rig">Mast-aft</a></li> <li><a href="/wiki/Pinisi" title="Pinisi">Pinisi</a></li> <li><a href="/wiki/Square_rig" title="Square rig">Square</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Flettner_ship" class="mw-redirect" title="Flettner ship">Rotorsail</a><sup>*</sup></li> <li><a href="/wiki/Turbosail" title="Turbosail">Turbosail</a><sup>*</sup></li> <li><a href="/wiki/Wingsail" title="Wingsail">Wingsail</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Sails <br />(<a href="/wiki/Sailing_rigs" class="mw-redirect" title="Sailing rigs">sailing rigs</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Three-sided</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Asymmetrical_spinnaker" title="Asymmetrical spinnaker">Asymmetrical spinnaker</a></li> <li><a href="/wiki/Crab_claw_sail" title="Crab claw sail">Crab claw</a><sup>*</sup></li> <li><a href="/wiki/Gennaker" title="Gennaker">Gennaker</a></li> <li><a href="/wiki/Genoa_(sail)" title="Genoa (sail)">Genoa</a></li> <li><a href="/wiki/Jib" title="Jib">Jib</a></li> <li><a href="/wiki/Lateen" title="Lateen">Lateen</a></li> <li><a href="/wiki/Mainsail#Bermuda_rig" title="Mainsail">Mainsail (Bermuda rig)</a></li> <li><a href="/wiki/Raffee_sail" title="Raffee sail"> Raffee</a></li> <li><a href="/wiki/Ringtail_(sail)#Triangular" title="Ringtail (sail)">Ringtail</a><sup>*</sup></li> <li><a href="/wiki/Screecher" title="Screecher">Screecher</a><sup>*</sup></li> <li><a href="/wiki/Spinnaker" title="Spinnaker">Spinnaker</a></li> <li><a href="/wiki/Staysail" title="Staysail">Staysail</a></li> <li><a href="/wiki/Trysail" title="Trysail">Trysail</a><sup>*</sup></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Four-sided</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Course_(sail)" title="Course (sail)">Course</a></li> <li><a href="/wiki/Fisherman%27s_staysail" title="Fisherman's staysail">Fisherman</a><sup>†</sup></li> <li><a href="/wiki/Foresail" title="Foresail">Foresail</a></li> <li><a href="/wiki/Junk_rig" title="Junk rig">Junk sail</a><sup>*</sup></li> <li><a href="/wiki/Lug_sail" title="Lug sail">Lug sail</a></li> <li><a href="/wiki/Mainsail" title="Mainsail">Mainsail (square rig)</a></li> <li><a href="/wiki/Moonraker_(sail)" title="Moonraker (sail)">Moonraker</a><sup>*</sup></li> <li><a href="/wiki/Ringtail_(sail)" title="Ringtail (sail)">Ringtail</a><sup>*</sup></li> <li><a href="/wiki/Royal_(sail)" title="Royal (sail)">Royal</a></li> <li><a href="/wiki/Skysail" title="Skysail">Skysail</a><sup>*</sup></li> <li><a href="/wiki/Spanker_(sail)" title="Spanker (sail)">Spanker</a></li> <li><a href="/wiki/Spritsail_(square-rigged)" title="Spritsail (square-rigged)">Spritsail (square-rigged)</a><sup>†</sup></li> <li><a href="/wiki/Spritsail" title="Spritsail">Spritsail</a><sup>*</sup> (<a href="/wiki/Optimist_(dinghy)" title="Optimist (dinghy)">Optimist</a>)</li> <li><a href="/wiki/Studding_sail" title="Studding sail">Studding</a><sup>*</sup></li> <li><a href="/wiki/Tanja_sail" title="Tanja sail">Tanja sail</a></li> <li><a href="/wiki/Topgallant_sail" title="Topgallant sail">Topgallant</a></li> <li><a href="/wiki/Topsail" title="Topsail">Topsail</a></li> <li><a href="/wiki/Watersail" title="Watersail">Watersail</a><sup>*</sup></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Sail_components" title="Sail components">Components</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Sail_batten" title="Sail batten">Batten</a></li> <li><a href="/wiki/Bolt_rope" title="Bolt rope">Bolt rope</a></li> <li><a href="/wiki/Cringle" title="Cringle">Cringle</a></li> <li><a href="/wiki/List_of_sail_emblems" title="List of sail emblems">Emblems</a></li> <li><a href="/wiki/Draft_(sail)" title="Draft (sail)">Draft</a></li> <li><a href="/wiki/Jackline" title="Jackline">Jackline</a></li> <li><a href="/wiki/Sail_components#Reefing_points" title="Sail components">Reefing points</a></li> <li><a href="/wiki/Sail_components#Roach" title="Sail components">Roach</a></li> <li><a href="/wiki/Sailcloth" title="Sailcloth">Sailcloth</a></li> <li><a href="/wiki/Spreader_patch" title="Spreader patch">Spreader patch</a></li> <li><a href="/wiki/Tell-tale_(sailing)" title="Tell-tale (sailing)">Tell-tale</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Spar_(sailing)" title="Spar (sailing)">Spars</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="/wiki/Bow_(watercraft)" title="Bow (watercraft)">bow</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bowsprit" title="Bowsprit">Bowsprit</a> <ul><li><a href="/wiki/Sprit_topmast" title="Sprit topmast">sprit topmast</a></li></ul></li> <li><a href="/wiki/Dolphin_striker" title="Dolphin striker">Dolphin striker</a></li> <li><a href="/wiki/Jackstaff" title="Jackstaff">Jackstaff</a></li> <li><a href="/wiki/Jibboom" title="Jibboom">Jibboom</a></li> <li><a href="/wiki/Pelican_striker" title="Pelican striker">Pelican striker</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="/wiki/Mast_(sailing)" title="Mast (sailing)">mast</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Boom</a></li> <li><a href="/wiki/Boomkin" title="Boomkin">Boomkin</a></li> <li><a href="/wiki/Gaff_rig" title="Gaff rig">Gaff</a></li> <li><a href="/wiki/Truck_(rigging)" title="Truck (rigging)">Truck</a></li> <li><a href="/wiki/Crosstrees" title="Crosstrees">Crosstrees</a></li> <li><a href="/wiki/Spinnaker_pole" title="Spinnaker pole">Spinnaker pole</a></li> <li><a href="/wiki/Spreader_(sailboat)" title="Spreader (sailboat)">Spreader</a></li> <li><a href="/wiki/Spritsail" title="Spritsail">Sprit</a></li> <li><a href="/wiki/Yard_(sailing)" title="Yard (sailing)">Yard</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Rigging" title="Rigging">Rigging</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Standing_rigging" title="Standing rigging">Standing</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bobstay" title="Bobstay">Bobstay</a></li> <li><a href="/wiki/Lazy_jack" title="Lazy jack">Lazy jack</a></li> <li><a href="/wiki/Running_backstay" title="Running backstay">Running backstay</a></li> <li><a href="/wiki/Shroud_(sailing)" title="Shroud (sailing)">Shroud</a> <ul><li><a href="/wiki/Ratlines" title="Ratlines">ratlines</a></li></ul></li> <li><a href="/wiki/Stay_mouse" title="Stay mouse">Stay mouse</a><sup>†</sup></li> <li><a href="/wiki/Stays_(nautical)" title="Stays (nautical)">Stays</a> <ul><li><a href="/wiki/Backstay" title="Backstay">backstay</a></li> <li><a href="/wiki/Forestay" title="Forestay">forestay</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Running_rigging" title="Running rigging">Running</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boomkicker" title="Boomkicker">Boomkicker</a><sup>*</sup></li> <li><a href="/wiki/Boom_vang" title="Boom vang">Boom vang</a></li> <li><a href="/wiki/Brace_(sailing)" title="Brace (sailing)">Braces</a></li> <li><a href="/wiki/Clewlines_and_buntlines" title="Clewlines and buntlines">Buntlines</a></li> <li><a href="/wiki/Cunningham_(sailing)" title="Cunningham (sailing)">Cunningham</a></li> <li><a href="/wiki/Clewlines_and_buntlines" title="Clewlines and buntlines">Clewlines</a></li> <li><a href="/wiki/Downhaul" title="Downhaul">Downhaul</a></li> <li><a href="/wiki/Guy_(sailing)" title="Guy (sailing)">Guy</a></li> <li><a href="/wiki/Halyard" title="Halyard">Halyard</a> <ul><li><a href="/wiki/Peak_halyard" title="Peak halyard">peak</a></li> <li><a href="/wiki/Throat_halyard" title="Throat halyard">throat</a></li></ul></li> <li><a href="/wiki/Outhaul" title="Outhaul">Outhaul</a></li> <li><a href="/wiki/Preventer" title="Preventer">Preventer</a></li> <li><a href="/wiki/Sheet_(sailing)" title="Sheet (sailing)">Sheet</a></li> <li><a href="/wiki/Tack_(square_sail)" title="Tack (square sail)">Tack</a></li> <li><a href="/wiki/Topping_lift" title="Topping lift">Topping lift</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Components</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Baggywrinkle" title="Baggywrinkle">Baggywrinkle</a></li> <li><a href="/wiki/Belaying_pin" title="Belaying pin">Belaying pin</a><sup>*</sup></li> <li><a href="/wiki/Block_(sailing)" title="Block (sailing)">Block</a></li> <li><a href="/wiki/Cleat_(nautical)" title="Cleat (nautical)">Cleat</a> <ul><li><a href="/wiki/Bitts" title="Bitts">bitts</a></li></ul></li> <li><a href="/wiki/Clevis_fastener" title="Clevis fastener">Clevis pin</a></li> <li><a href="/wiki/Deadeye" title="Deadeye">Deadeye</a></li> <li><a href="/wiki/Earing" title="Earing">Earing</a></li> <li><a href="/wiki/Fairlead" title="Fairlead">Fairlead</a></li> <li><a href="/wiki/Footrope" title="Footrope">Footrope</a></li> <li><a href="/wiki/Gasket_(sailing)" title="Gasket (sailing)">Gasket</a></li> <li><a href="/wiki/Parrel_beads" title="Parrel beads">Parrel beads</a></li> <li><a href="/wiki/Ring_bolt" class="mw-redirect" title="Ring bolt">Ring bolt</a></li> <li><a href="/wiki/Roller_furling" title="Roller furling">Roller furling</a></li> <li><a href="/wiki/Shackle" title="Shackle">Shackle</a></li> <li><a href="/wiki/Swivel" title="Swivel">Swivel</a> <ul><li><a href="/wiki/Gooseneck_(sailing)" title="Gooseneck (sailing)">gooseneck</a></li></ul></li> <li><a href="/wiki/Trapeze_(sailing)" title="Trapeze (sailing)">Trapeze</a></li> <li><a href="/wiki/Mechanical_traveller" class="mw-redirect" title="Mechanical traveller">Traveller</a></li> <li><a href="/wiki/Turnbuckle" title="Turnbuckle">Turnbuckle</a></li> <li><a href="/wiki/Winch" title="Winch">Winch</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Boom_(sailing)&oldid=1250383594">https://en.wikipedia.org/w/index.php?title=Boom_(sailing)&oldid=1250383594</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Sailboat_components" title="Category:Sailboat components">Sailboat components</a></li><li><a href="/wiki/Category:Sailing_rigs_and_rigging" title="Category:Sailing rigs and 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