🔍 Key Concepts

• Class A fires involve ordinary combustibles like wood, paper, cloth, and are best fought by cooling and soaking the material. • On IMO Fire Control Plans, the letters near nozzles/monitors (such as W, F, CO2, H) indicate the type of extinguishing agent or equipment. • Compare symbols that show water, foam, and CO2 and think about which is the most generally recommended for Class A fires on board ships.

💭 Think About

• Identify what each numbered symbol in the choices actually represents on a fire control plan (e.g., water hose/monitor, foam appliance, CO2 system). • Recall which extinguishing medium is normally preferred for deep‑seated fires in solid materials versus fires in liquids or machinery spaces. • Ask yourself which option would work safely and effectively on any typical Class A cargo or accommodation fire, not just on open deck areas.

✅ Before You Answer

• Verify which option shows equipment supplying water and which show foam or CO2. • Make sure you know that CO2 and Halon are not usually the first choice for deep‑seated Class A fires because they do not cool or soak the fuel. • Confirm which symbol corresponds to the standard fire main hose/hydrant or water application device most commonly used throughout the ship.