I have a use H22, the sink drains to a tube that goes no-place (into bilge). the plumbing diagram indicates that there is some brass fitting it is supposed to go to? I don't see any brass fitting. it looks like there is a through hull drain in the transom (might be aftermarket) that I could run this too. What is the original manufactured way to terminate the drain hose?is it legal in NY State to just let the winkwater drain out into the sea or does it need to go into a holding tank?