Engine Flood Pump....Would this work ?
OK, So I was taking a look at my new diverter valve (actually I was stalling the start of my head plumbing project) when this idea hit me. Now, this might be common knowledge, but it's the first time I thought of it. First you would hook up a diverter (Y) valve to your engine cooling saltwater inlet. The main connection going to the engine with one of the ends of the Y going to the inlet and the second end of the Y connected to a hose running to the lowest part of the bilge. In an emergency where you blow a thru hull or worse, hole the boat, you could turn the diverter from the inlet side to the bilge hose side have the engine act as a bilge pump. I'm not sure of the flow rate or if it would be worth it, but would it work? OK, I'll get on that head project now.