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Folk’s this boat is a beauty and she is decked out with many added options as well (see list below)
With a two-cabin layout for privacy, standard equipment, hide-a-way galley, and shoal-draft keel developed from NACA low-drag, high-lift wing sections, the Com-Pac 23/IV is ready for extended cruising and gunkholing.
Sails and equipment Halyard Winch Roller Furling system Roller Furling 135% Genoa Sail Cover Midship Cleats and Tiller Clutch Sheet Winches Genoa Tracks w/cars
Electronics Included Raymarine ST 40 Depth and Speed Raymarine Chart Plotter ST1000 Autopilot Bulkhead Compass 20 amp Shore Power 12 Volt Outlet
Some of her other options: Transom Ladder Sunbrella Cushions Cockpit Seating Vinyl Cushions Privacy Curtain Hatch Screen Custom Trailer Portable Head Bimini Top Stern Rail, Lifelines Mid Hull Rub Strake Upgraded Out Board Bracket Centerboard Keel
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)
Originally the WATKINS 25.
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