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Parameters of the J Class

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The article on Universal Rule doesn't seem to include mast height as a factor. Instead they have sail area. Also this article doesn't say what the product of the Universal Rule had to be.

J-Class can be considered as a subset of the Universal Rule, as such I think details could be added, amongst which the mast weight of 5,500lb. Nuttyrave (talk) 09:16, 5 February 2009 (UTC)[reply]

As an aside, does anyone know whether KZ-1 was a true J-class? The length and sail area seem about right, but the displacement is about one-third of the boats we have listed here Lisiate 23:16, 14 February 2006 (UTC)[reply]

No, KZ-1 is not a J-class yacht. She was built to exploit design loopholes in the America's Cup rule. She was not built with any reference to or consideration of the J-Class rule Boatman 15:41, 17 February 2006 (UTC)[reply]

What about Shamrock I, which the America's Cup website refers to as J-class? Cbaer 14:57, 8 December 2006 (UTC)[reply]

Only Shamrock V was J-class yacht. Shamrocks I to IV were cutters. Radomil talk 19:02, 9 December 2006 (UTC)[reply]
-> No. All Shamrocks were cutters, of which only Shamrock V was built to the J-Class rule. 1914 America's Cup defender Resolute was not built to the J-Class rule, but was converted to it in 1930 to make a trial horse for the purpose-built J-Class Enterprise. Bear in mind that the J-Class rule dates back to 1903 but no boat was built to it until 1930.Nuttyrave (talk) 15:20, 6 November 2008 (UTC)[reply]
I think the big change in 1930 was that rigging technology permitted the bermuda rig on very tall masts. This mature technology just coincidently appeared with the adoption of the J-Class for the 1930 America's Cup.Nuttyrave (talk) 15:25, 6 November 2008 (UTC)[reply]

I suggest original owners should be mentioned GilesW 01:35, 1 September 2007 (UTC)[reply]

done Nuttyrave (talk) 09:16, 5 February 2009 (UTC)[reply]

boat lines

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the J Class book covers the genesis of the class, the original and current rating rules and each of the following boats in their own short chapter. The book starts with a list of the included diagrams, all carefully rendered by François Chevalier. These drawings have an important part to play in the revival of the class:

launch yacht designer lines sailplan + hull profile deck layout
1893 Britannia George Lennox Watson 1893 1931
1893 Valkyrie II George Lennox Watson 1893 1893
1903 Reliance Nathanael Greene Herreshoff 1903 1903 1903
1908 Shamrock William Fife III 1908 1908
1914 Defiance George Owen 1914 1914
1914 Resolute Nathanael Greene Herreshoff 1920 1920 1929
1914 Vanitie William Gardner 1920 1920 1929 1920
1914 Shamrock IV Charles Ernest Nicholson 1920 1920
1927 Katoura Starling Burgess 1927 1927 1927
1928 Astra Charles Ernest Nicholson 1928 1931 1931
1928 Cambria William Fife III 1928 1928 1928
1929 Candida Charles Ernest Nicholson 1929 1931 1931
1930 Enterprise Starling Burgess 1930 1930 1930
1930 Shamrock V Charles Ernest Nicholson 1930 1930 2000 2000
1930 Weetamoe Clinton Hoadley Crane 1930 1930 1930
1930 Whirlwind Lewis Francis Herreshoff 1930 1930 1930
1930 Yankee Frank Cabot Paine 1930 1930 1930
1930 project John G. Alden 1930
1933 Velsheda Charles Ernest Nicholson 1933 1933 1997 1933 1997
1934 Endeavour Charles Ernest Nicholson 1934 1934 1989 1934 1989
1934 Rainbow Starling Burgess 1934 1934 1934
1935 project Frank Cabot Paine 1935
1936 Endeavour II Charles Ernest Nicholson 1936 1936 1936
1937 77A project Starling Burgess & Olin Stephens 1937
1937 77B project Starling Burgess & Olin Stephens 1937
1937 77C Ranger Starling Burgess & Olin Stephens 1937 1937 1937
1937 77D project Starling Burgess & Olin Stephens 1937
1937 77E project Starling Burgess & Olin Stephens 1937
1937 77F project Starling Burgess & Olin Stephens 1937
1937 uncompleted Tore Anton Holm 1937

The 23mR White Heather II and the A-class schooner Westward were the only other boats which ever raced with the J-Class. Both boats' lines could be included separately in the upcoming books "Mariette and the Herreshoff schooners" and "The Great Meter Classes", available shortly here. Nuttyrave (talk) 20:39, 15 May 2010 (UTC)[reply]

Changes of January 2014

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I made some changes and they were immediately reverted for purported "inaccuracies" . I made the changes to make the page more readable and to bring the page into conformance with information found at other pages (specifically the page at Universal Rule). So if what I added was inaccurate, so too is the page on the universal rule as well as the references therein. If you are going to revert purported "inaccuracies" the burden is upon you to list these accuracies. If the accuracies are not burdensome, I suggest correction (you know, actual editing...) rather than wholesale revision to the previous. If the inaccuracies are truly problematic then the burden is upon you, also, to change the other pages that reflect such purported inaccuracies. TreebeardTheEnt (talk) 16:53, 23 January 2014 (UTC)[reply]

I support improvements, but why did you add the Skene citation to the rating formula if you were not going to use it, gut the formula, use the 0.2 index which was pre-J-Class and introduce inaccuracies such as a rating of 88ft? The max is 76ft. I had previously worked on the French page, where fellow contributors did a fantastic job. Please read it and advise.. signed:Donan Raven (talk) 20:27, 23 January 2014 (UTC)[reply]
I accidentally transposed 88 ft when working from the table of classes at Universal Rule (I-Class max = 88ft). I have fixed that. A Note that the Universal rule wasn't put in place specifically to create classes, that was sort of the cart after the horse, and perhaps that should be noted here as well. TreebeardTheEnt (talk) 17:35, 24 January 2014 (UTC)[reply]
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Conversion to SI

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Conversion to SI units needed. 130.233.200.96 (talk) 11:46, 6 June 2023 (UTC)[reply]

 Done Done in text. Conversion in tables would be messy. HopsonRoad (talk) 13:09, 6 June 2023 (UTC)[reply]

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