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1977 Cape Dory Typhoon. Overall condition is fair. The hull is in good shape but the deck and cockpit are soft from water absorbing into the core. The boat is complete except it is missing the companionway hatch. Besides that, all of the hardware is there including a fairly new spartan bronze outboard motor bracket. Halyards are good. Standing rig is good. Mast is straight and in good shape. Original sails (main, working jib, genoa) and cushions are original and are usable. The boat could be sailed as is. As a winter project, this is a somewhat large but manageable project for someone handy to re-core the deck. There are YouTube videos and several online resources including the Cape Dory Owner Association website. I am trying to locate another hatch cover but one could be made from quality lumber. Asking $890
Equipment: Trailer is road worthy with new axle, hanging hardware, hubs and good tires. There is a spare tire. New trailer lights, fairly new coupling, rolling jack stand and hook up chains.
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)
Same hull as CAPE DORY 22.
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