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Due to moving states I am selling my Frances 26, designed by Chuck Paine and built by Morris yachts in 1982. She is Coast Guard registered and is currently on the hard in a marina in Brewster, Cape Cod. If you’re interested send me a message on here, thanks. Details Below: - 115% Genoa on roller furler new 2019 - Mainsail with 2 reefs in good condition - Spare Genoa in OK condition - Boom Gallows - New sail cover (2022) - Bronze self tailing winches - Re powered with 2GM20 Yanmar engine runs great with 513Hrs - Start Battery (new 2018) - Deep cycle house battery (new 2019) - Automatic bilge pump (new 2019) - All LED running,interior, and deck lights - Raymarine ST2000 tiller pilot (New 2019) - VHS with AIS reciever (Standard Horizon GX2400GPS new 2019) - 15kg CQR anchor with 45ft of chain and 120ft of rode plus spare fortress Danforth anchor with chain and rode - Portapotty head (unused) - 20 watt solar panel attached to pushpit (new 2019)
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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