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1976 ODAY 27 in very good condition powered by original re-built Universal Atomic Four 17 h.p. engine. Very well maintained and runs smoothly. Many parts, sail, lines, rigging and instruments replaced/upgraded over the last 20 years of my ownership. Replacements/upgrades include shaft, propeller, rudder, tiller, portals, Lewmar deck hatch, Bruce anchor & roller, head & plumbing, electric circuits. Over $200 of replacement spare parts come with the boat, as well as PDFs, galley equipment, jack lines, extra Danforth anchor, battery charger, 5 poppets (boat stands in very good condition). Need to sell due to health conditions. $4000 or B.O.
Also have a 7 y.o. dingy and 4 h.p. 2-cycle engine with less than 300 hours, anchor, bridle; both $600
Equipment: Safety equipment, jack-lines & tether, Tiller cover, Dodger Extension, $200 of extra parts, extra fire extinguishers, extra anchor, navigation aids/books/manuals, extensive maintenance records. For dinghy, bridle, extra oars, anchor, extra gas tank.
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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