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Royal Cape 45 Catamaran For Sale By Owner Location: Daytona Beach, FL Asking: $180,000 (USD)
S/V Ego Domi is a 2003 Royal Cape 45 catamaran, for sale by owner. A fantastic family boat, Ego Domi is a bluewater cruising catamaran built in 2003 at Durban, South Africa. She was sailed across the Atlantic to Florida in 2003 by the original owner and never entered into the charter trade. This is a large, well-appointed catamaran. Royal Cape catamarans are a very good value, are built with solid construction and are well-tried cruising boats. They are built very tough, as they were designed to handle conditions off the African East coast. This boat is great in rough seas with virtually no bridge deck slap due to the buoyancy of the hulls. Being well built, one shouldn’t expect a racing catamaran, but then again, if you’re looking for a catamaran with a large interior volume, which will keep 8 or so guests in consummate comfort, you could make worst choices than this RCC. Originally built with fiberglass over a wood core as a 5 cabin and 5 head charter boat, she was converted to 4 cabins and 4 heads in 2005 by the previous owners. The 5th cabin was converted into a tool / spare parts/storage room while the 5th head was converted into a battery storage room. During conversion, it was noted that the laminated bulkheads were 2 thick; main bulkhead is 3 in places.
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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