prv
Well-known member
For those who don't believe me ask what the the rag and stick guys with same setup do when the wind gets strong and the waves grow big.
I make sure that the washbasin seacock is closed, because if we heel right over on port tack the sea starts to spurt up the drain. I don't worry about the toilet at all though - the sea would almost be flooding over the edge of the cockpit before it could get over the loop in the plumbing. Maybe a bit slops over the top in hard conditions, I don't know, but if so the toilet valves are sufficient to hold that back.
Our toilet seacock is never closed, only exercised occasionally to stop it seizing up.
However, as I said in my first post, I don't know much about fast motorboats and I can see that smashing into the sea at 20knots might well force water up the spout. I'd have expected one of those aft-facing scoop fittings in that case, but I don't know what's normal in the mobo world.
Pete