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1982 Catalina 30 Tall Rig sailboat, excellent condition, located Lake Norman NC Perkins Perama M20 diesel engine many upgrades: Teak cockpit floor 2022 Garhauer Mid boom Traveler upgrade 2021 Force 10, 2 burner gimballed stove /oven 2021 2 sure marine 1 gal propane lockers Precision Sails full batten Main sail 2020 New main sail cover 2020 New starter motor 2020 Custom interior cushions 2019 Signet marine depth sounder 2019 Signet marine SL 254 wind instrument with mast head sensor 2019 CDI FF7 Headsail roller furler 2019 lazy jack kit 2019 all new standing rigging 2019 Pedestal steering idler upgrade ,with chain and cable 2019 Mast wiring harness 2019 Engine electrical panel 2018 Stainless steel exhaust mixing elbow 2018 AC/Dc main electric panel 2017 Aluminum spreader upgrade 2017 2 Lewmar evo 40 self tailing jib winches 2017 Edson pedestal with richie compass 2017 Marine beam LED navigation lights 2017 Marine LED cabin lights 2017
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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