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Catana 471 Catamaran For Sale By Owner Location: St. Lucia Asking: 395,000 (GBP)
S/V Panic Attack is a Caribbean based 2001 Catana 471 catamaran for sale by owner.Our unique Catana 471 has had one owner/operator from new and never chartered or damaged. Panic Attack is a well maintained, owner’s version catamaran, hull no 37. Three cabins, two heads and an upstairs galley with great visibility. Catanas are the premium brand for well experienced cat sailors. Panic Attack has had regular, yearly engine services , excellent rigging and has Banks Hydronet sails. The Volvo engines were replaced in 2013 and the Hydronet sails were also replaced at the same time. The spinnaker is new and unused. It’s a fast sailing cat which has done transatlantics with great comfort.…
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)
SA:
Mainsail area: 78 to 91m2
Genoa area: 28 to 52 m2
Gennaker: 82 m²
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