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Go to Sailing Texas classifieds for current sailboats for sale Com-Pac 23/IV, 2005 sailboat for sale no 639, the very first Mark IV made. Hull, deck and woodwork in excellent condition.
2011 Yamaha 9.9 hp outboard (electric start and electric tilt), in excellent condition, with 5-gallon fuel tank and new fuel line. Was winterized at end of 2021 season and has not been used this season.
2004 Road King Trail-N-Sail tandem axle galvanized trailer with hydraulic surge brakes in very good roadworthy condition. Mast-raising system built into trailer. Factory installed marine head with holding tank. Was winterized at end 2021 season and has not been used this season. Interior upholstery and fabric covers in excellent condition (sage green) with custom fitted additional closed cell foam topper for v-berth. Closed cell foam cockpit cushions. 13 gallon fresh water tank. Slide out stainless steel sink and slide out shelf with Glomate GM1600 butane single burner stove. Removable factory teak dining table (fits to bulkhead) between bench seats). Four 6 volt batteries (two years old) and Xantex TrueCharge2 40 amp battery charger. 30 amp shore power socket and cord. Misc fenders, docklines, fire extinguishers, life vests, boat hook, paddle, etc included in sale. Raymarine ST1000 tiller pilot with handheld remote. Lowrance HDS-5 gps and depth sounder on swingarm mount. Bimini and dodger in tan Sunbrella canvas. Stainless steel supports, hardware and canvas all in excellent condition. CDI Flexible Furler with Airforce furling jib in excellent condition with tan Sunbrella sewn-on UV cover. Airforce main sail in excellent condition with tan Sunbrella cover. Set up with single feeding points. New bottom paint in May 2022. Boat in the Tidewater Marina in Havre de Grace, MD with slip/winter storage paid until April 15, 2023. Boat and trailer titled and registered in my name in PA - clean titles in hand. Will transfer with bills of sale and signed titles.
SOLD
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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