A "bilge pump" is not automatically on a boat. Every boat does
however have a bilge area. It is the area in a boat's hull where
water collects. This area is seriously recommended to have a "bilge
pump" in it on every boat to pump the water out of this area while
on the water. Bilge's have drain plugs on the back of the boat for
when you take it out of the water to fully drain it.