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Go to Sailing Texas classifieds for current sailboats for sale Schock Harbor 20, 2002 sailboat for sale $12,500 – Brick, NJ
I purchased this 2002 Harbor 20 in 2012, sailed it in 2013, changed jobs, and didn’t sail again until 2022. I kept the boat in a slip in 2013, 2022, and 2023. In 2018, I purchased a custom Triad trailer [$5k], which has been used four times to tow the boat to and from the marina in 2022 and 2023. Other than the sails showing their age, the boat’s in good shape and ready for another season. The stainless steel standing rigging has only three season’s use and while you could probably get another season or two out of the sails, I’d find someone who races their boat and buy their practice sails; racers routinely change sails and usually offer their last set of very good condition sails at attractive prices. The Harbor 20 sails exceptionally well. It’s wonderfully responsive and the roller furling and self-tacking jib makes single-handing a joy. The cockpit is deep, comfortable, and spacious enough to bring along a few friends. I receive many compliments on the Harbor 20. It’s stable, fast, and fun – just splash and sail. Serious cash buyers only. 20’ OAL 7’ Beam 3’-6” draft fin keel 1,800 lb displacement, including 900 lbs lead ballast
SOLD
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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