a static bilge pump has an inlet tube , a body and one or more eductors . it may be attached to the back of a boat using bolts , or other means such that the inlet tube may be inserted into the drain at the bottom of the bilge of a boat . a siphon tube connected to the inlet tube hasn &# 39 ; t ends that may be placed at the bottom of the bilge or moved about by an operator . the eductor &# 39 ; s are streamlined to minimize drag and prevent blockage by debris and flotsam . buttresses may extends between the body and the doctors to improve stability .