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Offering a 2021 NACRA Evolution purchased new and only sailed in two Worrell 1000 races….no additional races and continuously stored in an indoor storage facility. Randy Smyth sailed this boat and made numerous enhancements to improve performance. Boat package includes all original equipment including main, jib and spinnaker, a Smyth Sails custom sail package including main, jib and spinnaker, spare battens, spare board, two spare rudders, spare mast with covers, spare spinnaker pole, boat trailer and cradles, large trailer box and attachment to carry two masts, spare trailer tires, beach wheels and beach cradles, 2:1 jib sheet system, board elevation system from windward side, positive mast rotation system, numerous other blocks and equipment adjustments to enhance performance. Both mains have reefing systems. Boat and mains are measurement certified. This a complete, ready to go package for anyone interested in competing in the Worrell 1000 or F18 series races. Please call me for additional information
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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