- Sep 27, 2007
I going to add 1" vents to my holding tanks. There are two heads in the two cabin version of the 393. I'm not concerned about the aft head but the forward one is in the V behind the anchor locker. I want to keep the vent lines as short and high as possible. With the mushroom thru hulls this far forward should I be concerned about sea water migrating into the holding tank? I'd like to avoid a clam shell fitting over the mushroom, it would have to be rather large.
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