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Com-Pac Eclipse 21’, 2005, $13,500.
Centerboard fractional rigged sloop kept under cover, galvanized trailer with new bearings and led lights, 6 hp Tohatsu long shaft outboard, Coast Guard equipped, cabin has porta potti, sink, 1 burner stove, cabin cushions and upholstery in great shape, accessory cockpit cushions, compass, depth sounder, roller furling jib looks great, mainsail with single reef point is older but serviceable, bimini top, ground tackle, quick and easy setup so you have less hassle and more time on the water.
Some recent updates:
New spare tire Motor-tiller linkage Re-dye mainsail cover Re-dye Bimini top New trailer wheel bearings Led trailer lights
Depth sounder and compass. Bimini top. Cabin has sink and porta potti. Galvanized trailer. Tohatsu 6hp longshaft outboard. All in good condition. Boat is stored under cover, cushions in garage. Easy set up design reduces time at the ramp. or phone (904) 571-3673
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)
Rig dimensions verified by builder.
Thanks to Judy Blumhorst from Hyde Sails.
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