one of the problems encountered will be the growth of mold and bacteria
inside of loose laminate structures/bulkheads, etc. .... any place or
crevice in which water has penetrated .... the same reason/outcome
that requires submerged houses in floods to be essentially be torn
apart and totally rebuilt.
Especiallly if the boat has any wood 'core' (decks, etc.) you wont know
how much water has absorbed into the core structure .... only to rot
out later on. Most fiberglass boats have cored decks, cabin
tops/sides, .... sometimes transoms and stringers/stiffners, etc.

Accelerated corrosion of non-tinned wiring. To be sure ALL the wiring
should be replaced.

I wouldnt touch a sunken boat with a 10ft. pole .... too risky and too
many heartaches if there is any water in the coring.




In article , Paul Rood
wrote:

other than engine and all electronics replacement, what are the pit fall to
look for.