[quote=tamumpower1]18 feet long max, 18 sq/m of sail, anything else goes. Open class from back in the day. Nacra at first used 5.2 hulls but then stretched them to 18 feet long with a beam usually around 11', unirig. The beam was then shrunk to normal width and the 18 foot long hulls became the 5.5 uni, then a jib was added and the sloop 5.5 was created.
[img]https://preview.ibb.co/f04Puo/33532270_10113095191508124_6830217307495596032_n.jpg[/img][/quote]
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