Bilge coatings are applied to protect the bilge surfaces. A bilge pump is a water pump used to remove bilge water. The hull is fitted with electric bilge pumps accordingly. Modern vessels usually use electric bilge pumps controlled by automated bilge switches. She rolled badly until fitted with a bilge keel. There is a manual bilge pump for emergency use. Steam pressure dropped, shutting down both the bilge pumps. Two of "Edmund Fitzgerald"s six bilge pumps ran continuously to discharge shipped water. She rolled badly until fitted with bilge keels. This resulted in fuel oil leaking into the bilge. All ships leak and require the regular operation of bilge pumps to stay afloat. Four bilge keels were fitted to improve stability. Both completed ships rolled badly until fitted with bilge keels. Semi round bilge hulls are somewhat less round. Roll damping by bilge keels of sufficient size will reduce the hazard.