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href="#The_first_ironclad_battleship"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>The first ironclad battleship</span> </div> </a> <ul id="toc-The_first_ironclad_battleship-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Navigable_balloons" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Navigable_balloons"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Navigable balloons</span> </div> </a> <ul id="toc-Navigable_balloons-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Electrical_submarine" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Electrical_submarine"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Electrical submarine</span> </div> </a> <ul id="toc-Electrical_submarine-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Legacy" 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Available in 21 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-21" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">21 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Breton" lang="br" hreflang="br" data-title="Henri Dupuy de Lôme" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Catalan" lang="ca" hreflang="ca" data-title="Henri Dupuy de Lôme" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Czech" lang="cs" hreflang="cs" data-title="Henri Dupuy de Lôme" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Danish" lang="da" hreflang="da" data-title="Henri Dupuy de Lôme" 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/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – German" lang="de" hreflang="de" data-title="Henri Dupuy de Lôme" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Estonian" lang="et" hreflang="et" data-title="Henri Dupuy de Lôme" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%91%CE%BD%CF%81%CE%AF_%CE%9D%CF%84%CF%85%CF%80%CE%BF%CF%85%CE%AF_%CE%BD%CF%84%CE%B5_%CE%9B%CE%BF%CE%BC" title="Ανρί Ντυπουί ντε Λομ – Greek" lang="el" hreflang="el" data-title="Ανρί Ντυπουί ντε Λομ" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Charles_Henri_Dupuy_de_L%C3%B4me" title="Charles Henri Dupuy de Lôme – Spanish" lang="es" hreflang="es" data-title="Charles Henri Dupuy de Lôme" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Basque" lang="eu" hreflang="eu" data-title="Henri Dupuy de Lôme" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – French" lang="fr" hreflang="fr" data-title="Henri Dupuy de Lôme" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%95%99%EB%A6%AC_%EB%93%80%ED%91%B8%EC%9D%B4_%EB%93%9C_%EB%A1%AC" title="앙리 듀푸이 드 롬 – Korean" lang="ko" hreflang="ko" data-title="앙리 듀푸이 드 롬" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Italian" lang="it" hreflang="it" data-title="Henri Dupuy de Lôme" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Malagasy" lang="mg" hreflang="mg" data-title="Henri Dupuy de Lôme" data-language-autonym="Malagasy" data-language-local-name="Malagasy" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%87%D9%86%D8%B1%D9%89_%D8%AF%D9%88%D9%BE%D9%88%D9%89_%D8%AF_%D9%84%D9%88%D9%85" title="هنرى دوپوى د لوم – Egyptian Arabic" lang="arz" hreflang="arz" data-title="هنرى دوپوى د لوم" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Dutch" lang="nl" hreflang="nl" data-title="Henri Dupuy de Lôme" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%A2%E3%83%B3%E3%83%AA%E3%83%BB%E3%83%87%E3%83%A5%E3%83%94%E3%83%A5%E3%82%A4%E3%83%BB%E3%83%89%E3%83%BB%E3%83%AD%E3%83%BC%E3%83%A0" title="アンリ・デュピュイ・ド・ローム – Japanese" lang="ja" hreflang="ja" data-title="アンリ・デュピュイ・ド・ローム" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Polish" lang="pl" hreflang="pl" data-title="Henri Dupuy de Lôme" 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/Charles_Henri_Dupuy_de_L%C3%B4me" title="Charles Henri Dupuy de Lôme – Portuguese" lang="pt" hreflang="pt" data-title="Charles Henri Dupuy de Lôme" 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%94%D1%8E%D0%BF%D1%8E%D0%B8_%D0%B4%D0%B5_%D0%9B%D0%BE%D0%BC,_%D0%90%D0%BD%D1%80%D0%B8" title="Дюпюи де Лом, Анри – Russian" lang="ru" hreflang="ru" data-title="Дюпюи де Лом, Анри" 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/Henri_Dupuy_de_L%C3%B4me" title="Henri Dupuy de Lôme – Swedish" lang="sv" hreflang="sv" data-title="Henri Dupuy de Lôme" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a 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data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox biography vcard"><tbody><tr><th colspan="2" class="infobox-above" style="font-size:125%;"><div class="fn">Henri Dupuy de Lôme</div></th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:DupuyDeLome.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/DupuyDeLome.jpg/220px-DupuyDeLome.jpg" decoding="async" width="220" height="241" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/DupuyDeLome.jpg/330px-DupuyDeLome.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/6/66/DupuyDeLome.jpg 2x" data-file-width="365" data-file-height="400" /></a></span></td></tr><tr><th scope="row" class="infobox-label">Born</th><td class="infobox-data">15 October 1816<span style="display:none"> (<span class="dtstart bday">1816-10-15</span>)</span><br /><div style="display:inline" class="birthplace"><a href="/wiki/Ploemeur" title="Ploemeur">Ploemeur</a></div></td></tr><tr><th scope="row" class="infobox-label">Died</th><td class="infobox-data">1 February 1885<span style="display:none"> (<span class="dtend dday deathdate">1885-03</span>)</span> (aged 68)<br /><div style="display:inline" class="deathplace">Paris</div></td></tr><tr><th scope="row" class="infobox-label">Nationality</th><td class="infobox-data category">French</td></tr><tr><th scope="row" class="infobox-label">Occupation</th><td class="infobox-data role">Naval architect</td></tr></tbody></table> <p><b>Stanislas Charles Henri Dupuy de Lôme</b> (<style data-mw-deduplicate="TemplateStyles:r1177148991">.mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}</style><span class="IPA-label IPA-label-small">French pronunciation:</span> <span class="IPA nowrap" lang="fr-Latn-fonipa"><a href="/wiki/Help:IPA/French" title="Help:IPA/French">[stanislɑ<span class="wrap"> </span>ʃaʁl<span class="wrap"> </span>ɑ̃ʁi<span class="wrap"> </span>dypɥij<span class="wrap"> </span>d(ə)<span class="wrap"> </span>lom]</a></span>; 15 October 1816 – 1 February 1885) was a French <a href="/wiki/Naval_architect" class="mw-redirect" title="Naval architect">naval architect</a>. He was the son of a naval officer and was born in <a href="/wiki/Ploemeur" title="Ploemeur">Ploemeur</a> near <a href="/wiki/Lorient" title="Lorient">Lorient</a>, <a href="/wiki/Brittany" title="Brittany">Brittany</a>, in western France. He was educated at the <a href="/wiki/%C3%89cole_Polytechnique" class="mw-redirect" title="École Polytechnique">École Polytechnique</a> and <a href="/wiki/ENSTA" class="mw-redirect" title="ENSTA">ENSTA</a>. He was particularly active during the 1840–1870 period. </p><p>After finishing his professional education, he went to England about 1842, and made a thorough study of iron shipbuilding and steam navigation. He wrote a report, subsequently published under the title of <i>Mémoire sur la construction des bâtiments en fer</i> in 1844.<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> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="The_first_steam_battleship">The first steam battleship</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Henri_Dupuy_de_L%C3%B4me&action=edit&section=1" title="Edit section: The first steam battleship"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:DupuyPlaque.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/DupuyPlaque.jpg/220px-DupuyPlaque.jpg" decoding="async" width="220" height="174" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/DupuyPlaque.jpg/330px-DupuyPlaque.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ef/DupuyPlaque.jpg/440px-DupuyPlaque.jpg 2x" data-file-width="951" data-file-height="754" /></a><figcaption>Henri Dupuy de Lôme lived at 374 <a href="/wiki/Rue_Saint-Honor%C3%A9" title="Rue Saint-Honoré">Rue Saint-Honoré</a> in Paris, from 1857 until his death in 1885 (detail of his commemorative plate on the right).</figcaption></figure> <p>After his return from England, Dupuy de Lôme started work at the arsenal in <a href="/wiki/Toulon" title="Toulon">Toulon</a>. At the time the only armed steamships in the French Navy were propelled by paddle-wheels, and there was great opposition to the introduction of steam power into line-of-battle ships. The paddle-wheel was seen to be unsuited to such large fighting vessels, and there was no confidence in the screw; while the great majority of naval officers in France, as well as in England, were averse to any decrease in sail spread. </p><p>Dupuy de Lôme had carefully studied the details of the <a href="/wiki/SS_Great_Britain" title="SS Great Britain"><i>Great Britain</i></a>, which he had seen being built at <a href="/wiki/Bristol" title="Bristol">Bristol</a>, and was convinced that full steam power should be used on line-of-battle ships. He held fast to this idea; as early as 1845 he addressed a report to the Minister of Marine suggesting the construction of a screw-driven <a href="/wiki/Frigate" title="Frigate">frigate</a>, to be built with an iron hull, and protected by a belt of armour formed by several thicknesses of iron plating. This report alone would justify his claim to be considered the leading naval architect of that time; such a ship was not built for several years, but the idea of the "classic" iron battleship was clearly stated in this report. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Napoleon(1850).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Napoleon%281850%29.jpg/220px-Napoleon%281850%29.jpg" decoding="async" width="220" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Napoleon%281850%29.jpg/330px-Napoleon%281850%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Napoleon%281850%29.jpg/440px-Napoleon%281850%29.jpg 2x" data-file-width="675" data-file-height="552" /></a><figcaption>Dupuy de Lome's <a href="/wiki/Le_Napol%C3%A9on_(1850)" class="mw-redirect" title="Le Napoléon (1850)"><i>Napoléon</i></a>, the first steam battleship.</figcaption></figure> <p>Dupuy de Lôme did not stand alone in the feeling that radical changes in the construction and propulsion of ships were imminent. His colleagues in the <i>Génie Maritime</i> (naval engineering) were impressed with the same idea: and in England, about this date, the earliest screw liners — converted "block ships" — were ordered. This action on the British part decided the French also to begin the conversion of their sailing line-of-battle ships into vessels with auxiliary steam power. </p><p>Dupuy de Lôme continued work on the idea, and was rewarded in 1847 with the ordering of <a href="/wiki/Le_Napol%C3%A9on_(1850)" class="mw-redirect" title="Le Napoléon (1850)"><i>Le Napoléon</i></a>, which would become the first steam-powered <a href="/wiki/Battleship" title="Battleship">battleship</a> as well as the first screw battleship ever built. She was 77.8 m (240 ft) in length, 17 m (55 ft) in breadth, and of 5,000 tons displacement, with two gun decks. She was launched in 1850, tried in 1852, and attained a speed of nearly 14 knots (26 km/h). During the <a href="/wiki/Crimean_War" title="Crimean War">Crimean War</a> her performance attracted great attention, and soon there were plans to introduce steam power to fleets around the world. </p> <div class="mw-heading mw-heading2"><h2 id="The_first_ironclad_battleship">The first ironclad battleship</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Henri_Dupuy_de_L%C3%B4me&action=edit&section=2" title="Edit section: The first ironclad battleship"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:La_Gloire.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/La_Gloire.jpg/220px-La_Gloire.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/La_Gloire.jpg/330px-La_Gloire.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8f/La_Gloire.jpg/440px-La_Gloire.jpg 2x" data-file-width="441" data-file-height="248" /></a><figcaption><a href="/wiki/FS_Gloire_(1858-1883)" class="mw-redirect" title="FS Gloire (1858-1883)"><i>La Gloire</i></a>, the first ocean-going <a href="/wiki/Ironclad" class="mw-redirect" title="Ironclad">ironclad</a> battleship (1858)</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Solferino(1861).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Solferino%281861%29.jpg/220px-Solferino%281861%29.jpg" decoding="async" width="220" height="154" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Solferino%281861%29.jpg/330px-Solferino%281861%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Solferino%281861%29.jpg/440px-Solferino%281861%29.jpg 2x" data-file-width="725" data-file-height="508" /></a><figcaption>The French ironclad <a href="/wiki/Solferino_(1861)" class="mw-redirect" title="Solferino (1861)"><i>Solférino</i></a>, of the <i>Magenta</i> class, the only two-decked broadside ironclad battleships ever built.</figcaption></figure> <p>Along with the introduction of steam-power, the use of iron armour was leading to another revolution in design at about the same time. Dupuy de Lôme applied his talents to this field as well, by showing the practicability of armouring the sides of a wooden-built ship. In 1857 he was appointed to the highest office in the <i>Constructive Corps—Directeur du Matériel</i>—and his design for the earliest seagoing ironclad, <a href="/wiki/FS_La_Gloire_(1858-1883)" class="mw-redirect" title="FS La Gloire (1858-1883)"><i>La Gloire</i></a>, was approved in the same year. <i>La Gloire</i> was built fairly quickly, and was followed by a construction program that delivered a total of five such ships by 1863. </p><p>Among these new ironclads were the only two-decked broadside ironclad battleships ever built, also designed by Dupuy de Lôme - <i>Magenta</i> and <i>Solferino</i>. These ships were also the first to be equipped with a spur ram. </p><p>In the design of <i>La Gloire</i>, Dupuy de Lôme followed the principle of utilising known forms and dimensions for existing successful designs, and only changing what was absolutely necessary. The <i>La Gloire</i> nearly reproduced <i>Napoléon</i> so far as under-water shape was concerned, but with one gun deck instead of two, and a completely protected battery. As long as he retained office, Dupuy de Lôme consistently adhered to this principle; but at the same time he showed himself ready to consider how best to meet the constantly growing demands for thicker armour, heavier guns, and higher speeds. It is important to note, however, especially during his early enthusiasm for ironclads, that only a small proportion of the ships added to the French Navy during his time in office were built of anything but wood. </p><p>Distinctions were showered upon him. He received the cross of the Legion of Honor in 1845, was made a commander in 1858, and grand officer in December 1863. In 1860 he was made a Councilor of State, and represented the French Admiralty in Parliament; in 1861, he was appointed "<i>inspecteur général du matériel de la Marine</i>" (general inspector for Navy equipment). In 1866 he was elected a member of the Academy of Sciences. At the beginning of the <a href="/wiki/Franco-German_War" class="mw-redirect" title="Franco-German War">Franco-German War</a> he was appointed a member of the committee of defence.<sup id="cite_ref-EB1911_2-0" class="reference"><a href="#cite_note-EB1911-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> From 1869 to 1875 he was a Deputy, and in 1877 he was elected a <a href="/wiki/Senator_for_life_(France)" title="Senator for life (France)">Senator for life</a>. He was a member of the Academy of Sciences and of other distinguished scientific bodies.<sup id="cite_ref-EB1911_2-1" class="reference"><a href="#cite_note-EB1911-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Navigable_balloons">Navigable balloons</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Henri_Dupuy_de_L%C3%B4me&action=edit&section=3" title="Edit section: Navigable balloons"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Ballon_dirigeable_de_4q77fs41h_0_c247dt237.tiff" class="mw-file-description" title="Henri Dupuy de Lôme Airship, 1872"><img alt="Henri Dupuy de Lôme Airship, 1872" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Ballon_dirigeable_de_4q77fs41h_0_c247dt237.tiff/lossy-page1-83px-Ballon_dirigeable_de_4q77fs41h_0_c247dt237.tiff.jpg" decoding="async" width="83" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Ballon_dirigeable_de_4q77fs41h_0_c247dt237.tiff/lossy-page1-124px-Ballon_dirigeable_de_4q77fs41h_0_c247dt237.tiff.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Ballon_dirigeable_de_4q77fs41h_0_c247dt237.tiff/lossy-page1-165px-Ballon_dirigeable_de_4q77fs41h_0_c247dt237.tiff.jpg 2x" data-file-width="2497" data-file-height="3619" /></a></span></div> <div class="gallerytext">Henri Dupuy de Lôme Airship, 1872</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:DupuyLomeDirigeable.jpg" class="mw-file-description" title="The navigable balloon developed by Dupuy de Lome in 1872"><img alt="The navigable balloon developed by Dupuy de Lome in 1872" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/DupuyLomeDirigeable.jpg/120px-DupuyLomeDirigeable.jpg" decoding="async" width="120" height="84" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/DupuyLomeDirigeable.jpg/180px-DupuyLomeDirigeable.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4f/DupuyLomeDirigeable.jpg/240px-DupuyLomeDirigeable.jpg 2x" data-file-width="669" data-file-height="468" /></a></span></div> <div class="gallerytext">The navigable balloon developed by Dupuy de Lome in 1872</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Dupuy_Lome_A%C3%A9rostat_dirigeable_envol.png" class="mw-file-description" title="The navigable balloon February 2, 1872"><img alt="The navigable balloon February 2, 1872" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Dupuy_Lome_A%C3%A9rostat_dirigeable_envol.png/120px-Dupuy_Lome_A%C3%A9rostat_dirigeable_envol.png" decoding="async" width="120" height="94" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Dupuy_Lome_A%C3%A9rostat_dirigeable_envol.png/180px-Dupuy_Lome_A%C3%A9rostat_dirigeable_envol.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Dupuy_Lome_A%C3%A9rostat_dirigeable_envol.png/240px-Dupuy_Lome_A%C3%A9rostat_dirigeable_envol.png 2x" data-file-width="1808" data-file-height="1412" /></a></span></div> <div class="gallerytext">The navigable balloon February 2, 1872</div> </li> </ul> <p>In 1870 Dupuy de Lôme devoted a large amount of time to perfecting a practical navigable balloon, and the French Government gave him great assistance in carrying out the experiments. For carrying out the project, he was given a credit of 40,000 francs; but the balloon was not ready until a few days before the capitulation. These experiments led to the development of one of the first navigable balloons, named the <i>Dupuy de Lôme</i>(<a href="https://fr.wikipedia.org/wiki/A%C3%A9rostat_dirigeable_Dupuy_de_L%C3%B4me" class="extiw" title="fr:Aérostat dirigeable Dupuy de Lôme">fr</a>). </p><p>The <i>Dupuy de Lôme</i> <a href="/wiki/Airship" title="Airship">airship</a> was 36 meters in length, 14.84 meters in diameter, 29 meters tall, and had a total volume of 3,454 cubic meters. It was powered by a crank, which was operated by 4 or 8 men and which could provide a speed of between 9 and 11 km/h.<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> The basket under the balloon could carry 14 people.<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> </p><p>In 1875, he was busy over a scheme for embarking a railway train at Calais, and exhibited plans of the improved harbour and models of the "bateaux porte-trains" to the Academy of Sciences in July.<sup id="cite_ref-EB1911_2-2" class="reference"><a href="#cite_note-EB1911-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Electrical_submarine">Electrical submarine</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Henri_Dupuy_de_L%C3%B4me&action=edit&section=4" title="Edit section: Electrical submarine"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Towards the end of his life, Dupuy de Lôme worked on a project for an electrical submarine, largely inspired from the experimental results of the submarine <i><a href="/wiki/French_submarine_Plongeur" title="French submarine Plongeur">Plongeur</a></i>. Upon his death, the project was taken over by his friend <a href="/wiki/Gustave_Z%C3%A9d%C3%A9" title="Gustave Zédé">Gustave Zédé</a>, leading to the launch of one of the first electrical submarines in the world, the <i><a href="/wiki/Gymnote" class="mw-redirect" title="Gymnote">Gymnote</a></i>. </p> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="Legacy">Legacy</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Henri_Dupuy_de_L%C3%B4me&action=edit&section=5" title="Edit section: Legacy"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Dupuy de Lôme was instrumental in helping the French Navy take the initiative in several of the technological advances of the 19th century, consolidating the position of the <a href="/wiki/French_Navy" title="French Navy">French Navy</a> as the second in the world at that time. These innovations relied on a strong industrial base, second only to Britain, and considerably ahead of the United States or Prussia. According to a British obituary, "it may be questioned whether any constructor has ever rendered greater services to the navy of any country...". He died at Paris on 1 February 1885. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Armoured_cruiser_Dupuy_de_L%C3%B4me.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/Armoured_cruiser_Dupuy_de_L%C3%B4me.jpg/220px-Armoured_cruiser_Dupuy_de_L%C3%B4me.jpg" decoding="async" width="220" height="152" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/Armoured_cruiser_Dupuy_de_L%C3%B4me.jpg/330px-Armoured_cruiser_Dupuy_de_L%C3%B4me.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/58/Armoured_cruiser_Dupuy_de_L%C3%B4me.jpg/440px-Armoured_cruiser_Dupuy_de_L%C3%B4me.jpg 2x" data-file-width="967" data-file-height="669" /></a><figcaption><a href="/wiki/French_armoured_cruiser_Dupuy_de_L%C3%B4me_(1887)" class="mw-redirect" title="French armoured cruiser Dupuy de Lôme (1887)"><i>Dupuy de Lôme</i></a></figcaption></figure> <p>Several warships have been named after Dupuy de Lôme: </p> <ul><li>The <a href="/wiki/Armoured_cruiser" class="mw-redirect" title="Armoured cruiser">armoured cruiser</a> <a href="/wiki/French_armoured_cruiser_Dupuy_de_L%C3%B4me_(1887)" class="mw-redirect" title="French armoured cruiser Dupuy de Lôme (1887)"><i>Dupuy de Lôme</i></a>, launched in <a href="/wiki/Brest,_France" title="Brest, France">Brest</a> in 1887, was capable of 23 knots (43 km/h), and designed to raid on enemy commerce ships during extended forays afloat, following the "<a href="/wiki/Jeune_%C3%89cole" title="Jeune École">Jeune École</a>" doctrine.</li> <li>The <a href="/wiki/Submarine" title="Submarine">submarine</a> <i><a href="/wiki/Dupuy_de_L%C3%B4me_(1915)" class="mw-redirect" title="Dupuy de Lôme (1915)">Dupuy de Lôme</a></i>, launched in 1915, and the <a href="/wiki/Lead_ship" title="Lead ship">lead ship</a> of <a href="/wiki/Dupuy_de_L%C3%B4me_class_submarine" class="mw-redirect" title="Dupuy de Lôme class submarine">her class</a>.</li> <li><i><a href="/wiki/Dupuy_de_L%C3%B4me_(A759)" class="mw-redirect" title="Dupuy de Lôme (A759)">Dupuy de Lôme</a></i>, launched March 27, 2004, and built in the <a href="/wiki/Netherlands" title="Netherlands">Netherlands</a> for the French Navy, is an intelligence vessel, designed to gather Comint (Communication intelligence) and Elint (Electronic intelligence). She will replace <i>Bougainville</i> from April 2006.</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=Henri_Dupuy_de_L%C3%B4me&action=edit&section=6" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/French_ship_Dupuy_de_L%C3%B4me" title="French ship Dupuy de Lôme">French ship <i>Dupuy de Lôme</i></a>, a list of ships</li> <li><a href="/wiki/Pierre_Marie_Fran%C3%A7ois_Og%C3%A9" title="Pierre Marie François Ogé">Pierre Marie François Ogé</a></li> <li><a href="/wiki/Giffard_dirigible" title="Giffard dirigible">Giffard dirigible</a></li> <li><a href="/wiki/Georges_Baptiste_Fran%C3%A7ois_Allix" title="Georges Baptiste François Allix">Georges Baptiste François Allix</a></li> <li><a href="/wiki/Arthur_Constantin_Krebs" title="Arthur Constantin Krebs">Arthur Constantin Krebs</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Henri_Dupuy_de_L%C3%B4me&action=edit&section=7" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></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"> Please help <a href="/wiki/Special:EditPage/Henri_Dupuy_de_L%C3%B4me" title="Special:EditPage/Henri Dupuy de Lôme">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=%22Henri+Dupuy+de+L%C3%B4me%22">"Henri Dupuy de Lôme"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Henri+Dupuy+de+L%C3%B4me%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Henri+Dupuy+de+L%C3%B4me%22&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=%22Henri+Dupuy+de+L%C3%B4me%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Henri+Dupuy+de+L%C3%B4me%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Henri+Dupuy+de+L%C3%B4me%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">March 2016</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> <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 class="mw-references-wrap"><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">Dupuy de Lôme, <a rel="nofollow" class="external text" href="http://gallica.bnf.fr/ark:/12148/bpt6k6208536h"><i>Mémoire sur la construction des bâtiments en fer</i></a> [Memoir on the construction of iron ships] (Paris, France: Arthur Bertrand, 1844).</span> </li> <li id="cite_note-EB1911-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-EB1911_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-EB1911_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-EB1911_2-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><span class="noprint"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png" decoding="async" width="12" height="13" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/18px-Wikisource-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/24px-Wikisource-logo.svg.png 2x" data-file-width="410" data-file-height="430" /></span></span> </span>One or more of the preceding sentences incorporates text from a publication now in the <a href="/wiki/Public_domain" title="Public domain">public domain</a>: <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="CITEREFChisholm1911" class="citation encyclopaedia cs1"><a href="/wiki/Hugh_Chisholm" title="Hugh Chisholm">Chisholm, Hugh</a>, ed. (1911). "<a href="https://en.wikisource.org/wiki/1911_Encyclop%C3%A6dia_Britannica/Dupuy_de_L%C3%B4me,_Stanislas_Charles_Henri_Laurent" class="extiw" title="s:1911 Encyclopædia Britannica/Dupuy de Lôme, Stanislas Charles Henri Laurent">Dupuy de Lôme, Stanislas Charles Henri Laurent</a>". <i><a href="/wiki/Encyclop%C3%A6dia_Britannica_Eleventh_Edition" title="Encyclopædia Britannica Eleventh Edition">Encyclopædia Britannica</a></i>. Vol. 8 (11th ed.). Cambridge University Press. p. 691.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Dupuy+de+L%C3%B4me%2C+Stanislas+Charles+Henri+Laurent&rft.btitle=Encyclop%C3%A6dia+Britannica&rft.pages=691&rft.edition=11th&rft.pub=Cambridge+University+Press&rft.date=1911&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHenri+Dupuy+de+L%C3%B4me" 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">Dupuy de Lôme, <a rel="nofollow" class="external text" href="https://books.google.com/books?id=hRYFJdeP1M8C&pg=PP7"><i>Note sur l'Aérostat à Hélice, Construit pour le Compte de l'État</i></a> [Note on a propeller-driven balloon, constructed on behalf of the French state] (Paris, France: Gauthier-Villars, 1872). The balloon's dimensions appear on pages 9–10. On pages 14–15, Dupuy de Lôme explains that the propeller (<i>hélice</i>) is driven by a hand-operated crank (<i>manivelle</i>), which in turn is operated by a crew of either 4 or 8 men: <i>"L'arbre de l'hélice [porte] … à son extrémité avant la manivelle par laquelle le treuil moteur lui transmet son travail."</i> (The propeller shaft [is connected to] … at its front end the crank by which the hoist motor transmits its power to it [i.e., to the propeller].) <i>"Je dirai enfin que ce treuil à bras, composé tout simplement d'un arbre en fer coudé, … , a ses coudes et ses manivelles placés de façon que le treuil étant manœuvré par quatre ou par huit hommes, … ."</i> (Finally I will say that this hand-powered hoist, [which is] composed quite simply of an iron shaft [bent into a series] of right angles, … , has its bends and its cranks placed so that the hoist being operated by four or by eight men, … .)</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">Tissandier, Gaston, <i>Les Ballons dirigeables: Expériences de M. Henri Giffard en 1852 et en 1855 et de M. Dupuy de Lôme en 1872</i> [Steerable balloons: Experiments of Mr. Henri Giffard in 1852 and in 1855, and of Mr. Dupuy de Lôme in 1872] (Paris, France: E. Dentu, 1872), <a rel="nofollow" class="external text" href="https://archive.org/stream/39002011211217.med.yale.edu#page/18/mode/2up">p. 19</a> : <i>"L'ascension a été exécutée le 2 février 1872, à 11 heures du matin. L'aérostat était gonflé au fort de Vincennes. MM. Depuy de Lôme, Zedé, Yon, Dartois et dix autres personnes, en y comptant les hommes de manœuvre, prennent place dans la nacelle."</i> (The ascent was undertaken on the 2nd of February 1872 at 11 in the morning. The balloon was inflated at the fort at Vincennes. Messrs. Depuy de Lôme, Zedé, Yon, Dartois and ten other people, which includes the crew, seated themselves in the basket.)</span> </li> </ol></div></div> <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=Henri_Dupuy_de_L%C3%B4me&action=edit&section=8" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><i>Scientific American Supplement, No. 481, 21 March 1885</i> (Public Domain)</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 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style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://isni.org/isni/000000011492451X">ISNI</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://viaf.org/viaf/61852072">VIAF</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="http://id.worldcat.org/fast/179440/">FAST</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://id.oclc.org/worldcat/entity/E39PBJt3YvyDPDdkGvpVtRkVYP">WorldCat</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">National</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://d-nb.info/gnd/117663697">Germany</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://id.loc.gov/authorities/n86837976">United States</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://catalogue.bnf.fr/ark:/12148/cb15354812k">France</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://data.bnf.fr/ark:/12148/cb15354812k">BnF data</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://www2.assemblee-nationale.fr/sycomore/fiche/(num_dept)/9512">Sycomore</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.deutsche-biographie.de/pnd117663697.html?language=en">Deutsche Biographie</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td 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