Prout Snowgoose Classic 37 Catamaran For Sale By Owner Location: Oriental, NC Asking: $95,000 (USD) Duty Paid
S/V Kyrie is a 1983 Prout Snowgoose 37 Classic for sale by owner. Completely refit in 2003 and continuously updated since. The refit was incredibly thorough with new sails, rig (since replaced again), new engine, new insulated headliner, new diamond seaglaze exterior windows, new cockpit custom roof and solar. Prout Snowgoose 37 boats are renowned for their build quality, beachability, extremely shallow draft, short mast, and good sailing manners.
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 √LWLA 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)
Early hulls, which include molded stub keels, are solid fiberglass, while more recent versions are solid below the waterline and cored above.
A later version became the SNOWGOOSE ELITE (1986) had 1 foot more beam.
The SNOWGOOSE 37 (all iterations) was enormously popular with more than 500 built.
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