Originally launched in 1953, the 5o5 has withstood the test of time and is considered by many to be the best performing high performance planing dinghy ever built. This international class routinely attracts the world’s best sailors, and world championship events, held annually, almost always attract over 100 boats. A physically demanding single trapeze boat, the 5o5 rewards sailors who are smart, in shape, and love to tune. The boat offers those “who like to tinker” almost unlimited opportunities. The class rules, while strict, are fewer in number than most one design classes, allowing different foil and hull designs, mast sections, etc. Most all of the top sailors still go the same speed though, and that speed is fast.
The 5o5 class is wonderful, but not for those on a tight budget. New boats are expensive and maintenance is not on the low end.
sail area 151 ft²
spinnaker area 280 ft²
hull weight 281 lbs.
# of boats built 9,000
active US fleets MD, FL, CA, MA, CT, RI, VA, NY
From the 505 class page:
For more information please visit this class associations website: