Just another Moderator
Join Date: Sep 2005
Location: New Westminster, BC
Thanked 486 Times in 460 Posts
Rep Power: 10
You may have a leak in the engine's cooling system that only leaks under pressure... and may not leak when you're away and the engine's not running. We had a leaky Heat Exchanger earlier this year, and the excess water ended up under the engine after overflowing the expansion tank.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)