So here's how it came down. Marina told owner bilge flooded *above* engine. Water entered thru lazarette, and nobody found/pulled the garboard drain. Boat has been sitting about 10 yrs, owner kept saying he was going to come down & fix it up until he heard about how high water was.
I did a thorough investigation, and water did not come up over 1/2 way on eng. Starter/alt is toast, but no (that's zero) water in the pan. Water in eng tested to -34 degrees, only took 1qt to fill. Trans took a Phelps, but since fresh water I'm gonna' flush it a few times & see what happens. Engine DOES turn by hand. Local guy can rebuild it if needed. Fuel tanks are FG, not metal. Couple floor pieces are rotted & toast. 2 good looking fairly recent batteries on boat, looks like owner visited & tried to get pump working. Water not over these batteries, so I pulled them & tried a charge. NG, zero volts, charger wouldn't start to charge. So I "tricked" it and got them charging on trickle, both up to 12V and holding. Biggest job so far was cleaning out eng rm, everything you can imagine took a cruise to parts you wouldn't believe. ( How long has it been since you saw "ESSO" anything? Full qt of ESSO motor oil in there too.)
So now when starter & alt is replaced, plan is to pull eng pressure alarm & use that hole to pre lube the engine for an hour or so. Obviously change all fluids etc. Pump out old fuel/replace. My furnace doesn't care what the cetane rating is, it won't go to waste.
So let the adventure begin. Stay tuned, when it starts I'll be back on the thread.