Which types of fire extinguishers are commonly used on ships?

The most commonly used types of fire extinguishers on ships include Water, Foam, Dry Powder, CO2, and Wet Chemical extinguishers due to the varied nature of potential fire hazards encountered in a maritime environment.

Water extinguishers are effective against Class A fires, which involve solid materials such as wood and paper. Foam extinguishers are versatile and can combat both Class A and B fires (flammable liquids) by smothering the flames and preventing reignition. Dry Powder extinguishers are particularly valuable for Class A, B, and C fires (gaseous fires), providing a wide range of application. CO2 extinguishers are essential for electrical fires as they do not leave a residue that can damage sensitive equipment. Wet Chemical extinguishers are specifically designed for Class K fires (cooking oils and fats), which are becoming increasingly relevant in galley spaces on ships.

The inclusion of all these extinguisher types in the correct answer reflects the comprehensive fire safety strategy required on ships, where diverse fire risks exist. Each type of extinguisher serves a unique purpose, ensuring that crew members are equipped to respond effectively to various fire incidents aboard.