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The owner bought this boat in 2010
General condition and any additional information
Great boat loaded with equipment….we are downsizing our fleet.
Standard features
LOA: 31’ Beam: 11’6” LWL: 26’6” Draft: 4’6” Bridge clearance: 46 10” Displacement: 10,700 Ballast: 4,400, Engine: Universal M25XPBC 27 HP 723 Hours Tanks: Fresh water 55 gals, Full 27 gals, Waste 20 gals.
Wing Keel, In-mast furling,
Large owners cabin forward with center-line queen size innerspring mattress, Hanging locker, Main salon with table and seating, large head with shower, galley with stainless sink, microwave oven, two burner propane stove and oven, Adler Barbour refrigeration, rear quarter berth with removable cushions. Electronics: RayMarine ST60 depth and speed, New EV-100 Autopilot (still in the box), C80 Chart Plotter, 24 mile Radar on self leveling mount. VHF at Nav. Station, Electrical; 30 amp shore power system, Batter charger (new in 2019) and zinc saver system, 4 4D Batteries and separate starter battery Sails: Mainsail with in mast furling, 135% furling headsail. Includes Forespar whisker pole with on mast storage track and line control car with topping lift.
Extra gear included
Whisker pole, life jackets, anchor, other.
Improvements to the hull, deck, rigging, engine, or interior
Catalina 310 2003 #222: Queen Size innerspring mattress, 12k BTU AC, Radar, Chart Plotter, Auto Pilot (new in box), Garhauer Dingy Davits and Crane, Kiwi Feathering prop. Whisker pole with on mast storage, Dodger, Bimini,helm cover, cockpit cushions, cabin fans, Lewmar Folding Wheel, , lots of custom canvas shade and storage areas, new heat exchanger and hoses, upgraded oberdorfer raw water pump. New battery charger, more. More photos soon.
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)
Wing Keel draft: 4.83’/1.47m
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