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Experience classic Cape Cod catboat charm with modern convenience in this exceptionally well-cared-for 2016 Horizon Cat 20. This boat has been garage-kept on a lift, always under cover, and used exclusively in freshwater. Its original gelcoat and bottom paint are in outstanding condition. Key Features: Length: 20 feet Draft: 2’5” (shallow stub keel with swing centerboard for versatile depth) Hull: White and cream topsides, blue flag hull with red boot stripe Rig: Catboat gaff rig with boom gallows for main and gaff boom Mast System: Mastender quick rig system for effortless mast raising/lowering Sails: Lazy jacks for easy sail handling Steering: Stainless steel ship wheel Engine: 9.8 HP outboard, electric lift and start Tohatsu Electrical: Two deep cycle batteries with switch and charger Comfort: Bimini top (never used, brand new) Custom cockpit cushions Custom cockpit table Navigation: Depth sounder Ground Tackle: Anchor on roller with chain and rope rode Amenities: Portable toilet (never used) Domestic water hand pump system and sink (never used) Propane cook stove Swim/Boarding: Swim ladder Exterior: Teak finished with Sea Cetol Trailer: Custom Magic Tilt trailer with spare tire, garage kept History: Only used in freshwater, always kept under roof and on a lift. Contact today to schedule a viewing or request more information. Dont miss this chance to own one of the best-kept Horizon Cat 20s available!
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)
Inboard diesel optional.
Based on the earlier HERRESHOFF AMERICA.
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