What is the purpose of a bilge pump?

The purpose of a bilge pump is primarily to remove excess water from the interior of a boat. Water can accumulate in the bilge, which is the lowest part of the vessel's interior, due to leaks, rain, or in cases where the boat has taken on water. If this water is not removed, it can lead to stability issues or even the risk of sinking. Bilge pumps are crucial for maintaining the boat's buoyancy and overall safety, ensuring that any unwanted water is efficiently pumped out to keep the vessel in good operating condition.

Other options relate to different functions unrelated to the role of a bilge pump. For instance, filling the boat with fuel pertains to fuel systems, circulating water for cooling relates to engine cooling systems, and inflating life jackets involves safety equipment. Each of these serves important functions in boating but does not reflect the specific purpose of a bilge pump.