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The JY Club Trainer is the ideal first boat for future Optimist racers. Based on the internationally respected Optimist design, the JY Club Trainer is the perfect youth training boat for clubs, camps and sailing programs. It’s not a legal Optimist - it’s a stronger and safer boat that performs like one. And, thanks to high-tech manufacturing, the JY Club costs less to buy and less to maintain than the Optimist.
Built with an advanced composite construction, the JY Club is strong, safe and needs little maintenance. The JY Club has plenty of built-in positive flotation. It’s unsinkable and doesn’t need airbags. When tipped over, it comes up dry. The JY Club floor is 3 inches higher than an Optimist’s, which lets the boat stay dry inside. The gunwales are rounded for comfort, and there is ample room for two kids or one adult. Even with all its improvements, a fully-rigged JY Club actually sells for less than the Optimists. And the JY Club is part of the JY Family of sailboats, which means it is backed up with the best warranty and customer support program in the business.
Specifications
Length 7 ft. 7 in. Beam 3 ft. 7 in. Dry Weight 77.0 lbs. Designer Rodney Johnstone Working Sail Area 35 sq. ft.
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64)2/3
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
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