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Regatta sport catamaran EXPLODER F18
double-trapezeF18

regatta sport catamaran
regatta sport catamaran
regatta sport catamaran
regatta sport catamaran
regatta sport catamaran
regatta sport catamaran
regatta sport catamaran
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Characteristics

Use
regatta
Trapeze
double-trapeze
Sport multihull class
F18
Length

5.52 m
(18'01" )

Description

When elaborating on the foredesign of the yacht in 2009, we used experiences from previous projects: Eagle, Exploder 20, Tornado and others. The concept proposed by the Exploder Sailing Team from designed and calculated by Ryszard Partycki. Catamaran’s hulls have a high displacement, however, in contrast to Nacra Infusion, side height of floats was raised but at maintaining their fineness ratio. At a very rounded deck, the front beam was completely hidden under the deck. This solution radically decreased water splashes from the front beam. Another undoubted advantage of this solution is a possibility of crew members to take up a comfort, optimal position, which the hidden beam does not hinder in. Moving around the deck is smooth and fast. In comparison to eX20, displacement on bows and the stern was increased, what in case of sailing with wind on such small boat (in relation to eX20), proved the project’s justness. The shape of hulls is selected on the basis of hull's resistances in a large range of catamaran's speeds, also for low and medium ones. Designers tried to minimize the wet surface of a hull (minimizing frictional resistance) without increasing the width of the waterline. F18 class catamarans are relatively heavier and have a relatively high wave resistance, however at some Froude numbers, frictional resistance is higher. These foredesigns were many times confirmed during light-wing races. (great results in the Roundtexel 2008 and 2009, or one won race during the World Championship in 2009 in Belgium). The upper part of bow part of the hull was shaped according to wave sailing issues.
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