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Stone Horse 23, 1978 sailboat for sale with diesel and trailer.
Asking $8,000.
The Stone Horse 23 is a full keel twin headsail (like a cutter) sloop based on a 1931 Sam Crocker design, but recreated in modern airex-cored fiberglass. Featuring a self-tacking staysail on a wishbone rig the boat is exceptionally easy to sail and handles like a dream. Rocinante has received much love from its owners, including brand new v-berth cushions (never used) and new cockpit cushions. Boat is in overall good condition, no damage to fiberglass and all teak is complete. She is a beautiful boat and we get lots of compliments at the dock and while sailing. The Stone Horse was manufactured by Edey and Duff in Massachusetts. 4490 pound weight, 2000 pounds lead ballast in fiberglass encapsulated keel. 23’3” on deck, 28’ overall including bowsprit and boomkin. Draft is 3.5 feet, beam is 7’1”. Repowered in 2005 with Betamarine 14 diesel with less than 220 hours which runs like a champ. New fabricated stainless steel high lift exhaust in 2020. Refiberglassed keel and keel joint (potential Stone Horse weakness) in 2020. All halyards 2020 or newer. Equipped with two optional dorade box vents for improved ventilation. Painted mast and boom in very good condition. Includes original cast iron heater/stove (uses wood or charcoal). All sails are tanbark and in good or better condition. Includes genoa (currently installed), two Yankees (one older but good, one very good), and two mains one good and one looks close to new (has been stored at our house). LED interior lighting, vhf radio, compass, Golden Rods (keeps interior dry). New porta potti. Depth meter is flakey seems to have bad connection, Rule automatic bilge pump and manual bilge pump are good. Bilge stays dry. Brand new Sunbrella boat cover goes from mast aft. Danforth anchor with bowsprit mount, chain and rode. Trailer is heavy duty tandem axle (looks like 10,000 lbs gvw) with mounted sailboat cradle. Looks like some wiring is not working correctly so we are including a magnetic light kit which does work. It is not a launching trailer. Near new tires. Will sell boat separately if trailer is not needed. Boat is in the water in San Diego and is sailed monthly. Slip is not transferable. She will come with all original paperwork, rigging instructions and brochures and there is a helpful and active Facebook owners group. or phone 858-775-3534 (text is best due to too many spam calls)
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)
At least 30 built of wood since 1931. Adapted for Fiberglass construction in 1968.(Edey & Duff).
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