My Burn's-designed Golden Gate 30 has about 3-1/2-inches clearance from the bottom of the galley
sink to the at-dock waterline.
What is the best way for drainage overboard
1. Direct flow through a seacock and thruhull under the sink. I tested and get a fair amount of water
into the sink on starboard tack so the seacock would have to be closed while under way. The orginal owner (who built the boat) abandoned this after the first cruise
and built a sump (under the engine
2. Drain into a seperate sump which gets pumped overboard
via a small auto electric bilge pump
. Potential odor
problems (but a trap was not used). The original owner was not that please with this either and I removed it for that and other space considerations.
3. Direct feed to a macerating pump and overboard discharge. This seems like a good solution - no through-hull, no stinky sump (there's always standing water).
Am I overlooking something? Have you, the sailing masses out there, tried or used this?
Thanks ahead for your input.