Question 871 Deck Safety

70% to pass

Which fire-fighting agent is most effective at removing heat?

A Carbon dioxide
B Water spray
C Dry chemical
D Foam
AI Explanation

The correct answer is B) Water spray. Water spray is the most effective fire-fighting agent at removing heat from a fire. Water absorbs a large amount of heat when it changes from a liquid to a gas (steam), effectively cooling the fire and suppressing the flames. Carbon dioxide, dry chemical, and foam fire extinguishers work primarily by smothering the fire and interrupting the chemical reaction, but they do not remove as much heat as water.

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Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
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