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Beautiful, easy to sail 2007 Catalina 250 Wing Keel, 3.5’ draft, wheel steering, 9.8 electric start four stroke Tohatsu outboard with controls, bottom job done Dec. 2019, roller furling, Bimini top, stern seats, cushions, sleeps 4 adults, new Thetford port-a-potty, new battery, new Garmin GPS Chart Plotter/ depth sounder, two burner stove, cockpit cushions, removable carpet, sails in excellent condition. Has the “pop up” camper option; new bunks on tandem custom trailer. In the water and ready to sail! Great first boat yet still roomy and enough fun for the experienced sailors! NADA low retail is over $19500!
Equipment: Tohatsu 9.8hp electric start, 4 stroke New shift and throttle cables Edson Wheel Steering CDI Flexible Furler Stern Seats Cockpit cushions (white) Bimini All lines run aft New Thetford portable toilet New Garmin GPS/Chartplotter New Duracell battery New ProMarine battery charger New SnapIt Cockpit Table Pop up Camper canvas and frame New bunk carpet and lights on custom Road King tandem trailer
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: 3.42’/1.04m
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