Actually, strange as it may seem, a submerged battery will still put out proper voltage for a long time. Battery acid is made of water and acid, and the vent holes in a battery would only allow a little water into the battery itself. The resistance of the water between the battery posts is great enough to keep it from shorting out. The items that it's powering may short out, but since bilge pumps are made to run underwater, they would not be one of them. 
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.
If God didn't have a purpose for us we wouldn't be here, so
Live simply, Love generously, Care deeply, Speak kindly.
(Leave the rest to God) 
Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
|