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Free Yacht Chapter 7: Get an Even Better One and Fabulize it.

Step 2Swim and Fix the Prop

Swim and Fix the Prop
Victor and Kenny jumped in to see what was wrong with the propeller.

I should explain about Victor and Kenny. They're sort of unrelated identical twins.
Sometimes they call each other by their own names because they get confused about which one they are. Everyone else does the same thing, or they say "Victorandkenny" or "Kennyandvictor". Victor tends to represent theory, motivation, and ridiculous schemes. Kenny tends to represent methods, Matlab, and being good-natured. They're a good team and don't usually manifest themselves without the other one showing up pretty soon.

There was a bumper crop of seafood hanging off the hulls. The propeller had no blades at all. They had either broken off or had been dissolved away by a mysterious electrical problem called electrolysis. We'd done some reading on the subject and were convinced of the awesome boat-dissolving powers of bad wiring.

Kennyandvictor managed to get the remains of the propeller off the shaft and didn't even lose the nut. It was a big relief to look at it. No apparent pitting or other corrosion.
The blades had just been broken off.
Probably because it had been totally encrusted with shellfish.
Saul had found a replacement propeller in the boat's cabin, so after a quick trip to the chandlery we had new zincs and a good propeller on the boat.
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Author:TimAnderson
Tim Anderson is the author of the "Heirloom Technology" column in Make Magazine. He is co-founder of www.zcorp.com, manufacturers of "3D Printer" output devices. His detailed drawings of traditional ...
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