Does your boat need a bilge pump? An automatic-switch bilge pump is a requirement for any vessels 20’ and over with sleeping accommodations, but is a great convenience for any size boat. Boaters, boat-builders, and dealers all want one thing from their bilge pumps — more power. And that's what the Tsunami® Series delivers... with high-capacity, high-efficiency output Tsunami Cartridge pumps have replaceable / interchangeable motor cores. Makes servicing simple and quick.