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Equipment: With almost 2,000 hulls launched, this is one of the most popular 36 foot sailboats ever built: they are well-designed and well-built in the U.S. by one of the most successful sailboat builders in the world. Very spacious (both above and below deck), easy and fun to sail, even short-handed, and are equally at home racing, daysailing or cruising (Cruising World says the Catalina 36 is “a happy blend of conservative, medium-displacement cruising logic and spry one-design racing potential”). Note that there is an active Catalina 36 Owner’s Association, with their own web site with useful information. Universal Diesel: model M-25XP SN 600802 Galley: dual stainless steel sinks, microwave, Frigoboat refrigeration, Stove and oven. Diesel heater - Newport by Dickinson Simpson -Lawrence windlass Horizon 600 True charge multi stage battery 20 charger JRC Radar 1500 LCD mounted on transom post Two VHF’s West Marine and Cobra Raymarine autopilot 3000; Raytheon L365 Fishfinder Lewmar self tailing winches in cockpit & rope clutches, lines leading into cockpit Garhauer boom vang, Harken jib roller cockpit cushions
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)
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