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Old 07-24-2007
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Quote:
Originally Posted by Johnrb View Post
Note also that very narrow hulls can exceed the hull speed defined by the formula 1.34 X sq. root of LWL. High performance multihulls are a good example of this.

Destroyers are another example. The WW II HMCS Haida had a maximum speed of 36.5 knots - LOA is 377 feet (estimate LWL as say 20 ft. less) and you get a ratio of 1.93.

http://hmcshaida.ca/tourintr.html
With two steam turbines generating 44,000 hp I certainly hope the Haida can exceed the 1.34 multiplier. I don't think that is not the kind of boat this discussion is about.

As for high performance multi-hulls, they most certainly do plane.
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