Quote:
Originally Posted by OsmundL
Finally, corrosion: By all means take it seriously, but can we please not explain matters as if there is an untreated bare aluminum hull lying in the water? That is equivalent to explaining the flaws of a fibreglass yacht as if it were built in ply sandwich without a gelcoat. The Ovni is coated inside and out with a pretty hard surface. .
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The ouside of the Ovni hull is just bare untreated alumium. There is no hardcoat added.(The topsides are painted for asthetics and to reduce heat absorption. The underside is antifouled). The inside of most other aluminium yachts is also bare untreated alumium. (The ovni is usally painted arround the bilge)This is fine. Marine grade Aluminium is almost immune to saltwater attack, better than fiberglass which even with a gelcoat absorbs water and looses strength.
I pointed this out because many people believe aluminium corrodes in seawater. It can be attacked if electrically attached to other metals or has electrical current running through it, but with sensible construction and common sense, as others have pointed out, this is not be a problem.