I have only 1 thru hull
that I use on my 31' Prout catamaran
, its for the raw water
intake on a yanmar diesel
that resides outside the cabin
high above the waterline. This thru hull
valve needs replacing.
If the engine
can draw water
out of a bucket on deck why can't I run an external hose below the water line at transom?
I could remove the thru hull
altogether and not worry about the extra hole in my hull
. Does the thru-hull intake benefit from extra pressure by being forced 2 feet below the waterline? wouldn't that pressure be equalized at the waterline anyway?
If the stern rises enough to allow a little sporadic air intake would that hurt the engine
I could open/close this eternal intake from the helm
instead of having to climb down into the bottom of the boat every time. And if I forget to close it - so what!