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This 1982 Cape Dory 25D is an excellent performing, yet stable 25-footer that looks and handles like a much larger yacht. Accommodations for four. Settee berths port and starboard, quarter berth to starboard, shelves port and starboard in main cabin. Has an L-shaped galley with sink & icebox. Molded galley countertop, trash bin and a manual water system.
The head located in the forward V area is spacious with a vanity and sink, opening skylight and standing headroom that is rare for a boat this size. A 3’ 6” draft which makes it easier to anchor close to shore. Very efficient 9 HP Yanmar 1GM diesel inboard enine with a 13 gallon fuel tank, 20 gallon freshwater capacity, and 14 gallon holding tank.
Mainsail and cover with two available jib sails. Garmin 540s GPS-chartplotter, Oceanus Marine VHF radio with masthead antenna. SI-TEX Depth Sounder. ST1000 tiller autopilot. Two anchors, swim ladder, cockpit seat cushions, canvas dodger. A great sailboat for the family!
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)
Later offered by C. W. Hood Yachts (1996?) as the OCTAVIA 25.
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