
01-17-2009
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Senior Member
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Join Date: Aug 2006
Location: Arlington, VA
Posts: 1,666
Rep Power: 7
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Jimmy,
What you're doing is very dangerous practice. I witnessed a large sailboat at my marina sink several years ago because he had done the same thing...used a light bulb in the engine room.
It's dangerous because: (1) if the bulb burns out you're SOL; (2) the engine block is only one thing to worry about; a frozen thru-hull is even worse.
Furthermore, putting the bulb on a thermostat INCREASES the chance of it burning out. Turning it off and on is worse than leaving it on.
I'd bite the bullet and put an engine-room heater there. The marine-approved ones aren't cheap, but you've gotta consider the cost of a damaged engine or worse.
Bill
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