What is the purpose of the firemain system?

• A. to provide FF water
• B. to provide air supply
• C. to drain the bilge
• D. to pressurize compartments

Answer: (A)

The firemain system is built to deliver water for firefighting. It’s a network of pumps and pipes that takes water from a source (often seawater) and distributes it to hose stations, monitors, and sprinklers around the ship, providing pressurized water where firefighters need it. This ready supply lets crews quickly apply water to a fire, control the blaze, and cool hot spaces to prevent spread. It’s not meant to supply air, drain the bilge, or pressurize compartments—that’s handled by other systems like ventilation, bilge pumps, and space-pressure controls. So the main purpose is to provide firefighting water.