View source for Engineering:15-metre class

{{Infobox sailboat specifications
|name            = 
|image           = 1907-Ma'oona-The Yachtsman 1908.jpg
|imagesize       =
|alt             = 
|caption         = The 15mR ''Ma'oona'' in 1908.
|class_symbol    = 
|class_image     = 15 Metre.png
|class_imagealt  = Class symbol
|class_imagesize = 
|crew            = 
|type            = 
|design          = Development class
|construction    = 
|rig             = 
|keel            = 
|trapeze         = 
|loa             = 
|loh             = 
|lwl             =  
|beam            =  
|draft           =  
|hull            = 
|mastheight      = 
|mainsailandjib  = 
|sailarea        = 
|mainsail        = 
|jib             = 
|spinnaker       = 
|d-pn            = 
|rya-pn          = 
|phrf            = 
|year            = 1907 (design rule)
|designer        = 
|location        = 
|builder         = 
|role            = 
|updated         = 
|olympic         =
}}
The IYRU '''Fifteen Metre class''' yachts are constructed to the First International rule of 1907. A total of twenty 15mR yachts were built between 1907 and 1917, the four that have survived are still actively raced.

== History ==
The IYRU International Rule was set up in 1907 to replace the YRA 1901 revised Linear Rating Rule. The IYRU 15mR boats would replace the YRA 52-raters and open competition to foreign nations, replacing local or national systems with a unified rating system across Europe. The rule changed several times, but the 15mR boats only raced in the first rule of 1907. The twenty boats that were built, were raced in Spain, France, Britain and Germany. The rule was proposed for competition in the 1908 Olympics but there were no entries.

==1907 Rule==
[[File:Saint Tropez 2012 - start of the IYRU 15mR class.jpg|thumb|The four restored 15mRs in their first races together]]
The 15-Metre class is a construction class, meaning that the boats are not identical but are all designed to meet specific measurements in a formula, in this case the In their heyday, Metre classes were the most important group of international yacht racing classes, and they are still actively raced around the world. "Metre" does not refer to the length of the boat, but to her rating; the [[Engineering:Length overall|length overall]] of 15mR boats measuring almost {{convert|30|m|ft}}.

The 15mR formula used in the First International Rule from 1907 to 1920:

<math>15~\mbox{m}=\frac{\textrm{L}+B+\frac{1}{2}G+3d+\frac{1}{3}\sqrt{S}-F}{2}</math>

where
*L = load waterline length in metres
*B = beam in metres
*G = chain girth in metres
*d = difference between girth and chain in metres
*S = sail area in square metres
*F = freeboard in metres

==Boats==
{| class="wikitable"
!Launch!!Yacht!!colspan=3|Sail no.!!Designer!!Shipyard!!First owner!!Details
|-
|1907||''Ma'oona''||colspan=3| ||Alfred Mylne||{{flagicon|SCO}} Robert McAlister & Son||J. Talbot Clifton||later sold to Almeric Paget
|-
|1907||''Shimna''||colspan=3| ||William Fife III||{{flagicon|SCO}} Alexander Robertson & Sons||William Yates||later rechristened ''Slec'', and ''Yildiz'' in 1938. damaged and broken up in Turkey 1949.
|-
|1908||''Mariska''||colspan=3 align=center|'''D1'''||William Fife III||{{flagicon|SCO}} Fife & Son||A. K. Stothert||restored by the Charpentiers Réunis de Méditerranée in 2009
|-
|1909||''Ostara''||colspan=3 align=center|D2||Alfred Mylne||{{flagicon|SCO}} Robert McAlister & Son||William P. Burton||
|-
|1909||''Anémone II''||colspan=3| ||{{nowrap|C. Maurice Chevreux}}||{{nowrap|{{flagicon|FRA}} Chantier Vincent, Cannes}}||Philippe de Vilmorin||
|-
|1909||''Encarnita''||colspan=3| ||Joseph Guédon||{{flagicon|ESP}} Karpard de Pasajes||Marquis of Cuba||
|-
|1909||''Hispania''||colspan=3 align=center|'''D5'''||William Fife III||{{flagicon|ESP}} Karpard de Pasajes||King Alfonso XIII||restored by the Astilleros de Mallorca in 2012<ref>{{Cite web |url=http://www.fundacionislaebusitana.es/?q=node/11 |title=Hispania |publisher=Fundación Isla Ebusitana |access-date=2019-08-21 |archive-url=https://web.archive.org/web/20160502224427/http://www.fundacionislaebusitana.es/?q=node%2F11 |archive-date=2016-05-02 |url-status=dead |language=es }}</ref>
|-
|1909||''Tuiga''||'''D3'''||D9||1||William Fife III||{{flagicon|SCO}} Fife & Son||17th Duke of Medinaceli||owned in the 1920s by Warwick Brookes.<ref>{{cite news|title=Royal Southern Yacht Club|date=1922-08-07|work=The Times|page=3, column F}}</ref> rechristened ''Betty IV'', ''Dorina'', ''Kismet III''. restored by Fairlie Restorations in 1993<ref>{{Cite web |url=http://www.fairlierestorations.com/tuiga/indexpage1.htm |title=Fairlie Restorations |access-date=2015-11-09 |archive-url=https://web.archive.org/web/20160304073500/http://www.fairlierestorations.com/tuiga/indexpage1.htm |archive-date=2016-03-04 |url-status=dead }}</ref>
|-
|1909||''Vanity''||colspan=3 align=center|D4||William Fife III||{{flagicon|SCO}} Fife & Son||W. & Benn Payne||
|-
|1910||''Paula II''||align=center|D2||colspan=2 align=center|D8||Alfred Mylne||{{flagicon|SCO}} Robert McAlister & Son||Ludwig Sanders||
|-
|1910||''Tritonia''||colspan=3 align=center|D3||Alfred Mylne||{{flagicon|SCO}} Alexander Robertson & Sons||Graham C. Lomer||later rechristened ''Jeano'', ''Gerd II'', ''Rinola'', ''Fortuna II'', ''Cisne Branco'' and ''Albatroz''. served in the Gremio de Vela da Escola Navala in Brazil until 1986
|-
|1910||{{nowrap|''Sophie-Elisabeth''}}||align=center|D6||colspan=2 align=center|D4||William Fife III||{{flagicon|SCO}} Fife & Son||L. Biermann||1913/1914 sold to G.Eyde, Norway, and rechristened ''Beduin'',<ref>"Die Yacht", 1914,Vol.27, p.672</ref> later ''Magda X''
|-
|1911||''Senta''||colspan=3| ||Max Oertz||{{flagicon|GER|empire}} Max Oertz||{{nowrap|Duke of Saxe-Altenburg}}||
|-
|1912||''[[Engineering:Istria (yacht)|Istria]]''||colspan=3 align=center|D7||Charles E. Nicholson||{{flagicon|ENG}} Camper & Nicholsons||Charles C. Allom||World's first Marconi topmast. broken up in Norway 1924.
|-
|1912||''The Lady Anne''||colspan=3 align=center|'''D10'''||William Fife III||{{flagicon|SCO}} Fife & Son||George Coats||restored by fairlie Restorations in 1999 with her 1914 rig configuration
|-
|1913||''Pamela''||colspan=3 align=center|D1||Charles E. Nicholson||{{flagicon|ENG}} Camper & Nicholsons||S. Glen L. Bradley||
|-
|1913||''Paula III''||align=center|D2||colspan=2 align=center|D8||Charles E. Nicholson||{{flagicon|ENG}} Camper & Nicholsons||Ludwig Sanders||
|-
|1913||''Isabel Alexandra''||colspan=3 align=center|D5||Johan Anker||{{flagicon|NOR}} Anker & Jensen||E. Luttrop||
|-
|1913||''Maudrey''||colspan=3 align=center|D3||William Fife III||{{flagicon|SCO}} Fife & Son||W. Blatspiel Stamp||
|-
|1917||''Neptune''||colspan=3| ||Johan Anker||{{flagicon|NOR}} Mandrup Abel||S. Klouman||
|}

== References ==
{{reflist}}

===Sources===
*{{cite web|url=http://www.15mrclass.com/|title=15mR Class|access-date=2015-11-09|archive-date=2015-10-11|archive-url=https://web.archive.org/web/20151011053726/http://15mrclass.com/|url-status=dead}}

===Bibliography===
*{{cite journal|journal=Le Chasse Marée|url=http://www.chasse-maree.com/numeros-51-a-100/1078-chasse-maree-n-78.html|issue=78|publisher=Abri du Marin|title=Tuiga et les Quinze Mètres JI|author=Dr. William Collier|date=April 1994|page=38}}
*{{cite book|title=Tuiga 1909|publisher=Yachting Heritage|url=http://www.yachtingheritage.com/en/books-collection/13-tuiga-1909.html|author=Dr. Daniel Charles|date=August 2005|isbn=978-0-9550777-0-8}}
*{{cite book|author=François Chevalier|url=http://www.abbeville.com/bookpage.asp?isbn=9780789209955|title=Classic Yachts|chapter=Tuiga|publisher=Thomas Reed Publications|year=2008|isbn=978-1-4081-0518-4|access-date=2015-07-15|archive-date=2015-09-08|archive-url=https://web.archive.org/web/20150908164541/http://www.abbeville.com/bookpage.asp?isbn=9780789209955|url-status=dead}}

{{DEFAULTSORT:15}}
[[Category:Keelboats]]

{{Sourceattribution|15-metre class|1}}