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22 ft Seafarer Kestrel fiberglass sloop (Sparkman- Stephens Design.) Full shoal draft keel with drop centerboard (centerboard replaced by Front St. Shipyard 2014.) Sitka Spruce mast, boom, & spinnaker pole. Cabin sleeps 2 comfortably and 4 in a pinch with V berth & 2 small berths all with cushions. Has a galley sink. Very stable, fast sailing. 3700 lbs. , including 1400 lb. ballast. Points well. The mast can be stepped by two people without special equipment. Currently on stands at Belmont Boatworks, Belmont, Maine $3,200 or best reasonable offer.
Equipment: New Mainsail; New green sail cover; Rod roller furling Genoa jib (2011); working jib & spinnaker. Bronze winches. Life ring; anchor; compass. Nissan 4 stroke, 6 horsepower (used very infrequently, serviced annually); portable external fuel tank; portable head. 2 boat hooks. 5 boat stands included. $2,900 or best reasonable offer.
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)
S&S design #1631.
Imported by Seafarer. Also called KESTREL 22. ‘CRUISE’ is a designation used here for at least 2 versions of this yacht. Earlier literature shows 2 deck layouts and 2 accommodation plans being offered, resulting in four versions: CATALINA, NASSAU, NANTUCKET and MONHEGAN. The boat displayed here has a larger and longer coach roof and shorter cockpit in addition to a few other minor differences from the DAYSAILER versions. The boat shown also has an extended stern (The original S&S design listed LOA at 22’.)
By 1969 all versions were promoted as SEAFARER SAIL’N TRAIL 23. The small cabin version was the ‘OLYMPIC’, the medium was the CATALINA, and one with the largest cabin the ‘NANATUCKET’.
There is also another, later, SEAFARER 23 (built at Seafarers Long Island, NY, USA plant), which is a completely different design.
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