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Old 04-05-2009, 06:50 PM   #1
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When going through the ‘for sale’ ads, one thing that hits home is the wide variety of hull materials used. The following list is from cruising type cats 30’plus:

=Duflex; =GRP; =Divinicell foam & Vinylester+Kevlar cloth; =Aluminium; =Strip plank cedar; =West Red Cedar/Glass/Epoxy; =Foam Sandwich; =Composite ATL Duracore/west epoxy.

. . . If your base requirements are safety and low maintenance, is there one material that stands out from the others.

[By safety I mean: can take a knock and be beached, without too much worry]
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Old 04-05-2009, 11:18 PM   #2
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A short answer :- it depends.

It depends on the design of catamaran, it depends on who built the hulls, what material specification is used, what budget does the client have.

The exotic materials are expensive and require specialized knowledge and experience.

Foam cores are light but are subject to holing by point impact. Aluminium of the correct grade and thickness is very strong and can take beaching. The use of Epoxy resins with cedar or balsa cores have real merit.
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