Originally Posted by xymotic
I recently hauled my new-to-me boat. She has 9 underwater thru-hulls.
2 are straight thru pipes for the cockpit
3 are transducers.
Near the head
, there were three with the head
discharge about 1' upstream of the sink intake, and one capped off.
#8 is the engine
#9 is the galley
So I'm thinking of how I want to approach this. I think I can live with the head discharge being close to the sink intake, if they were reversed.
would a single
3/4" intake be enough to service
wash-down, both sinks and possibly a watermaker
? (I won't have a genny, but this is a total refit
so anything else I might want seawater for?)
Would it be dumb to route
drain forward to the head, or vice-versa?
is a 3/4" waste discharge big enough if the waste is run through a macerator?
For what its worth... The only below-the-waterline penetrations a boat should have are only what is minimally required.
For me, it is only the raw water
intake and exhaust
output that sits below the waterline. All sink drains sit above-the-waterline. My head has a dedicated fresh water
supply. And when I'm offshore
and in discharge-legal areas, my head drains directly into the water
via a thru hull
that sits 2 inches above the water.
I would re-evaluate whether you need that many penetrations below the waterline. The fewer there are, the less likely you are to take on water in the event of a failure.