Tonight while Natalie was doing the dishes the galley sink stopped draining. After picking at the drain for a few minutes with a long thin brush I brought out the shop vac. I stuck the hose over the drain and turned it on. “Uh Oh,” I thought as the water level in the sink remained constant. The hose then filled up with water, being sucked out of the ocean through the boat’s plumbing. When I turned off the shop vac and pulled the hose away, all the water drained overboard. Next time you’ve got a clog at home, try my way. Just don’t do it for a clogged toilet!