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“Isogon” is a Classic Canadian built racer-cruiser that has only been sailed on Lake Ontario and has only had two owners since it was launched. This is a fairly simple boat that is great to learn on or to downsize to. It is easily sailed by two people and can comfortably accommodate a small family.
Willing to discount asking price if sold and relocated before haulout this fall.
Equipment: Sails & Rigging - Full-batten main w/ two reef points - 3 Genoas (No. 1, 2, 3) on Harken furler - Spinnaker w/ gear including pole - DRS w/sock (All sails Quantum from 2003 except No. 1 (UK 2015)) - Whisker pole - S.S. standing rigging - 4-to-1 soft line boom vang - Split backstay with adjuster - Traveller in cockpit ahead of companionway
Deck & Cockpit - 3x Barient #10 single speed winches on cabin top - 2x Andersen #28 self-tailing two-speed winches in cockpit (2015) - 2x mast mounted winches for headsail and main hoisting - Edson wheel steering w/ folding table on pedestal - 2 large cockpit lockers - Cockpit cushions - Double lifelines / gate on port side - Small bimini covering helm (2005) - All ports replaced in 2005 - Swim ladder on transom
Interior Cabin: - 2 burner alcohol stove to starboard - S.S. sink with Whale pump faucet and locker underneath - Large ice chest to port - Dish and glass rack, drawer - Dinette to port (convertible to double berth); large settee to starboard - Storage lockers under and behind cushions - Head w/ new marine toilet, S.S. sink and Whale pump - Hanging locker to starboard across from head - Double V-berth with shelves, reading lights and opening hatch - All cushions replaced 2010
Engine & Electrical: - Universal Atomic 4 30hp gasoline engine, runs well, transmission replaced 2005 and fuel pump and filter rebuilt 2021 - Exhaust hoses, muffler and water lock replaced 2009 - 2 blade fixed propeller - 12V DC system w/ 2 batteries and 3 position selector switch - 110V/30 amp shore power with cable; several AC outlets - Eagle EVR-150 VHF radio w/ DSC - Seafarer 3 depth sounder - Fairly new radio with two speakers in cabin
Other: - Danforth anchor w/ 20 chain and 150 Nylon rode - Folding rock anchor - Fenders and mooring lines - Life ring - Tankage: 16 gal fuel; 25 gal water; 5 gal holding - Also comes with steel cradle: 5 point support w/ folding legs
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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