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New Yanmar3YM20 diesel 2014- 250 hrs. Boat well kept, sails like a charm, worthy of any sea. All chain plates including bow replaced 2016.
Equipment: furling 150% Genoa Jib (new 2019), Mainsail (new 2017). 4 ft draft shoal keel , 39 ft mast. Mizzen mast with sail. Traveler for mainsheet Yanmar 3YM20 diesel motor (new 2014, 250 hrs). Wheel with Binnacle. 6 cockpit sheet winches, 2 mast halyard winches, 2 winch handles. Garmin 740XS chart plotter and Radar dome (new 2014 on mizzen), Raymarine autopilot (2016), all connected by Seatalk system. Digital Moor Depth Sounder, Datamarine Corinthian II digital knot log. Ritchie Powerdamp 5 flat card compass in binnacle. Icom M-120 VHF marine radio. Solar panel and controller, two deep cycle batteries. Galley sink and Shipmate stove, 25 gal collapsible potable water tank. 2 propane tanks in locker. Under counter icebox with drain to bilge. Plates, bowls and glasses. Manual pump toilet and 18 gal holding tank. Sink. Forward cabin and V berth bedroom cushions (total 4). 4 bumpers, 4 docking lines. Dodger (new 2016), and cockpit cushions. Documented Vessel. New Dodger 2016.
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)
(formerly listed as CAPE DORY 30 KETCH)
Also available as a cutter. (CAPE DORY 30C).
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