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JY15 Sailboat. Nearly New! $4,900 with Trailer!
available at Shoreline Sailboats
Five-year-old barely-used JY 15 Sailboat (sailed on Lake Wawasee in Indiana) now located in Western New York. Spars and mast and blades are about 15 years old from my previous JY, but that plastic hull cracked (as they all did). I took the old boat and parts to Nickels, the new builder of JYs (now Windrider), who now make them out of fiberglass and had the parts put on the new fiberglass hull ($5,500 paid). The Intensity sails have been used just twice (really). An old set of original sails is included. New sheets and lines installed last year.
Boat comes with a galvanized trailer and extra wheel; bearings overhauled two years ago.
Boat is fast and a great trainer. Quick and easy to rig.
Complete at $4900. (new JY 15 with trailer is $10,700-http://www.windrider.com/jy15-21549.html)
Delivery options possible - Get a free no commitment delivery quote!
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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