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1982 Oday 28 Keel Centerboard Sailboat ideal bay sail boat located at Ocean Gate Yacht Basin. Repowered in 2018 with a Beta 14 Marine diesel with TMC Transmission and 40 Amp alternator. Professionally installed by Ocean Gate Yacht Basin with a new stainless-steel shaft, new cutlass bearing and shaft packing. The installation also included the installation of new steering pedestal throttle and shift cables. The boat comes with a complete set of sails which includes the original working jib, a lightly used HILD SAILS Genoa, and a New Main Sail purchased in 2020 designed by Dave Johnson of Cedar Creek Sails Constructed in the USA using USA manufactured fabric. The Boat also comes with a Bimini and a custom winter tent type winter cover, SITEC GPS Chart Plotter, Lazy Jack system, ICOM DSC Radio with external mike, Solar Power 50-watt Panel with a battery charge control system, no need to plug into shore power to keep batteries charged. Also, during the repower the propeller was serviced. In addition, the boat has been barrier coated in approximately 2001 with 5 coats of INTERLUX INPOTEC after being sandblasted and all blisters and air bubbles where ground out and filled with 3M Vinyl Ester filler.
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)
A keel/cb verion of the the O’DAY 28 was also available. Draft BU: 3.25’, BD: 6.83’
Later, the the keel/cb version was dropped in favor of a shoal draft fixed keel: Draft:3.67’
Deeper keel: Draft:4.67’/ 1.42m
Alternate tall rig:
I: 38.00’ / 11.58m
J: 12.08’ / 3.68m
P: 32.50’ / 9.91m
E: 10.00’ / 3.05m
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