What is firemain supply/color

• A. Provides required seawater, color is red
• B. Provides freshwater, color is blue
• C. Provides seawater, color is green
• D. Provides seawater, color is yellow

Answer: (A)

Firemain supply is the ship’s primary firefighting water system; it delivers seawater to fire main outlets and deck fittings so you can fight fires with a large, readily available water source. The color red is used to mark firefighting piping and equipment, helping you identify the firemain quickly under stress. That combination—seawater supply and red color coding—is why this option is the correct one. Freshwater is used for drinking and other non-firefighting purposes, and the other color codes don’t match the standard firefighting markings, so they don’t fit the firemain system.