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1969 Allied Greenwich 24ft masthead sloop with full keel. Great sailing boat! George Stadel design, solidly built by Allied Boat Company. The design was sold to the new Cape Dory Company to become the successful Cape Dory 25 in 1972 (same hull).
24 ft 3 in length 7 ft 3 in beam 3 ft 0 in draft 3800 lbs displacement 1600 lbs encapsulated lead keel 265 sq ft sail area (main and jib)
Hull and deck have been newly sanded and painted with two coats of epoxy paint. Interior cabin has been sanded and newly painted with one coat of epoxy paint. All bright work newly sanded and varnished on deck and oiled in cabin. Keel has been scraped and painted with 2 coats of bottom paint. Cabin bulkheads should be reinforced with fiberglass. (Recommended by a professional boat builder.) Needs basic wiring for battery and running lights & plumbing has been disconnected. Newer boat cushions. Mast & standing rigging in very good condition. Halyard in good shape, needs new sheets. 3 sails in good condition- two mains and one jib. One of the mains appears to be newer. Rudder, rudder post with tiller steering in good condition.
Equipment: Johnson Sail master 9.9hp long shaft motor in unknown condition. Anchors, extra line, ropes, etc. included.
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)
In 1972 the design was sold to the Cape Dory Company and became the Cape Dory 25 (with new deck and coach roof).
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