Tim,
Was putting the above post together while you were giving us some verse on how great it is for you and your family to go on that shakedown!

CONGRATULATIONS

Underwater!!??
I was thinking, it would be much easier to use a socket wrench under water than a screw driver, or nut driver, ON THE GUDGEON FASTENINGS. Not with a rachet but one with a plain long handle and the socket on a knuckle so you gain purchase. Hope to hell I never have to do it underwater!

Once out of the water, maybe the fitting could be taken apart and put back together with anti-seize Tefgel. Never know!

Bet you forgot about it already....