What is the primary purpose of a ship's bilge system?

The primary purpose of a ship's bilge system is to remove excess water and prevent flooding. Ships can accumulate water in the bilge due to various reasons, including leaks, condensation, or water that enters the vessel during operations. The bilge system includes pumps and drainage systems designed to safely remove this water, ensuring the ship remains stable and buoyant. By maintaining proper water levels within the bilge, ships can prevent potential flooding that could endanger the vessel and its crew, making this function critical for marine safety and operational integrity.

The other options do not accurately describe the function of the bilge system; fresh water for crew hydration, power for engines, and cooling for electrical systems are managed by entirely different systems on a ship.