RW Salnick wrote in news:e9o55a$2hq$1
@gnus01.u.washington.edu:

Don't forget that a diesel engine, which has no throttle butterfly, is
moving a lot of air out of the compartment all the time it is running



That's true in a Hatteras with twin turbo 8V92TA's in it....but not in a
sailboat with a two-cylinder Yanmar idling slow. Even wide open, it's
still two little diesel pistons pumping slowly up and down, not much of a
threat to pumping out the stinky head hose smell on other threads at all...
(c;