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From sailboat data: https://sailboatdata.com/sailboat/catalina-30
From practical sailor: https://www.practical-sailor.com/sailboat-reviews/sailboats-21-30ft/catalina-30
This is a 36 year old boat - I have maintained items as needed. New heat exchanger two seasons ago and new head 2 seasons ago that are notable. I have owned it since 2007.
Equipment: Marine head, sink and shower holding tank 15 Gal macerator - inoperable Hot and cold pressure water system 2 water tanks Galley two ss sinks, two cabnets w/draws, two burner Force 10 natural gas stove/oven ,icebox, sea water pump Salon w seats 6 Berths 3 sleeps 6 Clothes locker Navigation station Edson Pedestal wheel steering Emergency steering if wheel steering fails Emergency manual bilge pump in cockpit Cock-pit Cushions Bimini Trinidad bottom paint applied in August 2020 SS swim ladder Cockpit folding table
Genoa - Roller Furling Mainsail with full battens Mainsail Cover
Electrical 12 volt DC cabin lights 110 volt AC wall outlets Shore power 30 AMP AM FM stereo w/4 speakers VHF Nav lights plus deck and steaming lights Auto bilge pump Group 24 Batteries in good condition (x2) Smart Battery Charger Garmin 420 GPS with Depth Engine Universal Diesel 21hp circa 1200 hours
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)
BMW diesel (9hp) offered as an option.
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