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1978 ODay 23-2 Sloop Sailboat for sale $8500 Westminster, MA.
Downsizing, so must let her go.
Boat has been out of the water for 3 years, on trailer, wrapped. Masthead sloop model manufactured until 1984, built predominantly of fiberglass, with wood trim. Transom-hung rudder and a folding centerboard keel. Design has a PHRF racing average handicap of 240, and a hull speed of 6 knots.
Ocean slip two seasons: 2012, 2013. Lake mooring 5 seasons: 2014,15,16,17,18.
Features sleeping accommodations for 5 persons, with a double V-berth in the bow cabin, a drop-down dinette table (in need of repair) that converts to a double berth and a single settee berth on the starboard side. The (portable potty) head, with sink is located in the bow cabin on the port side. Cabin headroom 60.
Fitted with 2005 Johnson 8hp 2-stroke engine.
Custom-fitted, galvanized, electric hydraulic-brake equipped 2011 Loadmaster Trailer, with full spare tire and wheel.
Equipment: Features and details: 23 LOA. 711 Beam. 64 max draft. 27 min draft. LWL: 196. Displacement: 3085 lbs. Ballast: 1200 lbs.
New Mainsail (2014). Newly conditioned centerboard: 2012. New standing rigging and paint (above waterline): 2014. Fitted cockpit cushions. Mast, boom, manual boom vang, backstay, topping lift, stanchions & lifelines, 2 Barlow winches. Trickle charge battery charger (battery is old and should be replaced). 12V DC system. Tiller steering. 2 anchors. Bow pulpit with rails. Roller furling jib. Genoa 130’. Translucent hatch boards. Fenders & lines. Life jackets. VHF radio (2). Compass. Spinnaker sail. Water tanks. Gas tank (cockpit, concealed under seat).
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)
The first O’DAY 23 featured a large ‘lift top’ (see photo) that allowed the entire coach roof to be raised from the hull at once. The keel stepped mast stayed in place. This was a unique feature and somewhat controversial at the time.
Later the size of the pop top was reduced, (called ‘Convertible Top’ as in drawing), extending just aft of a deck stepped mast with tabernacle.
With the O’DAY 23-2, the deck stepped mast remained, but the pop top idea was abandoned entirely.
The O’DAY 23 (all versions) was in production for more than 10 years and was one of the company’s most popular models. (1500+ built).
See O’DAY 23-2.
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