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Solid 1972 Yankee 28 sailboat. These are very well-regardedand hard-to-findboats that sail beautifully. This one could use some cosmetic work. It is set up for serious sailing with a lot of recent upgrades and needs nothing to sail now.
Rebuilt Atomic 4 gas engine that runs perfectly, with fresh-water cooling, a new electronic ignition system, electric fuel pump, and external thermostat and bronze housing from Indigo marine, all within the last year. Service manual included.
Newer head and holding tank, pressurized fresh water to the head and galley, and a hot water heater, all of which work great.
All new running rigging in the last year, including dyneema halyards, topping lift, and new lifeline stanchions, dyneema lifelines, and most of the deck hardware has been sealed with epoxy and rebedded.
Sails are older but in good shape: loose-footed Quantum main, 5 headsails, including a laminate North Sails 155 genoa, drifter, and a spinnaker in good shape.
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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