Well, on a high security application, I would use wlok padlocks. The
316 series stainless that they use should be highly resistant to saltwater.
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The cheapest lock's that do well in corrosive enviroments are probably the warded master locks...with a heavy greasing with a water resistant grease (aluminum bearing), they do pretty well. I would certainly reccomen that route over a cheap import pin tumbler lock in bad conditions. Not very secure, but ok in some applications.
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> Hi, guys. I'm looking for a supplier of marine-grade locks (salt
> > corrosion-resistant etc.) for civilian or military boats/sailboats. Did
> > a google search, but was interested to see what you folks have seen or
> > worked with.
>
> Papaiz, a Brazilian maker, does padlocks in all brass. The only
> non-brass item is the spring inside the padlock.
>
> I know where to get them in the UK.
>
> Cheers,
>
> chris