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2013 Nacra 17 Mark I for sale in Florida $10,000. Will deliver to reasonable location for a fee. Boat comes with trailer, trailer box included. This is the Olympic Nacra 17 one design used in the Rio Olympics, the Mark 1 semi-foiling catamaran. This boat is very light and very powerful, giving the experienced cat sailer the most thrilling ride you can get on the water. Powerful high aspect fully battened main, jib and large gennaker. Double trapeze. I sail the boat in Key West, and there is no other sailboat from 10 to 100 feet in my area that can even come close to her speed. The boat is capable of 25 knots, I have gotten it to 21 knots. Drives like a Formula 1 race car on the water. The entire boat is one design certified, meaning that it is eligible for class racing. Boat is in good shape and ready to daysail or race. All rigging, blocks, trampoline, sail controls, rudders and mast in good to excellent shape, the c-foil daggerboards have minor scratches that are cosmetic only, some of the running rigging is new, some is older but still functioning perfectly. The new boat of this type is $38,000.
Equipment: Full hull, rigging, and sails, extra jib and two extra spinnakers.
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)
Carbon mast and carbon epoxy high aspect curved daggerboards.
Spin. Area 19m2/204 sq.ft.
Used as 2 person catamaran class for 2016 Olympics.
A new, ‘foiler’ version has been under development. The intent is to make it so original boats can be retrofitted. (7/16)
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