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1976 O’Day 27. Don’t let the year scare you. It’s in very good condition, mast, hull, keel. All the way down to the cushions in the cabin. All original interior, no big rips stains breaks. This is a very fast boat and was used for racing. It has placed first many times. Does come with the trailer. The trailer is in good shape. I was told boat can be launched from trailer. I am the second owner of this boat. Bring your truck, hook her up, and take her home, ready to sail. Trades considered for a smaller sailboat for shallow waters in same or better condition preferably 22’ .Boat is located in Grafton NH.
Equipment: Its all here and works fine, standing cab 6’3” height, 2 sinks, alcohol stove, refrigerator, toilet, lights, stereo, 6 disc changer, kicker speakers, bilge pump fresh water tank, and waste tank, privacy doors for the rooms, and screens for cab door. Comes with 18 horse 2 stroke johnson outboard, starts up. Also comes with sails main, jib, genoa, 2 spinnaker, and covers. trailer
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)
Deep keel: 5.3’/1.62m.
Inboard engine available as an option - displacement: 6,950 lb/3,152 kg
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