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2004 Potter, HIN HMSA2654C404. We bought it in 2015. Used three seasons in Moriches Bay then got busy/Covid and have not sailed her. Very stable easy boat to sail in a bay. Not fast. Very shallow draft goes anywhere. Always stored in dry barn. May need some new lines and bottom paint. Hull seems good. Some rust on very bottom of center board. Cabin with two berths is bit of a joke unless you’re under three feet tall but provides huge storage space for days out or overnights. And fits a small porta potty in a pinch (for the ladies). This boat has a huge fan base - we hope to pass her on to another enthusiast with the time to treat her right and show her off.
Equipment: Oldie but goodie sails. Engine new in 2015. Brand new Rudder Craft high performance rudder still in wrappings. On her original Pacific Trailer. Crate of equipment including throw bag, fire extinguisher, medical kit, bilge pump, tools, etc. Sorry no PFDs. Air horn did not survive.
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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