Question 842 Deck Safety

The correct answer is A. Dry chemical fire extinguishers have the advantage over carbon dioxide (CO2) extinguishers in that they can be used on Class B (flammable liquids) and Class C (energized electrical equipment) fires, whereas CO2 extinguishers are less effective on these types of fires. Dry chemical extinguishers contain a powdery agent that smothers the fire, while CO2 extinguishers rely on the displacement of oxygen, which is less effective on liquid and electrical fires. This makes dry chemical extinguishers a more versatile choice for many marine applications. The other answer choices (B, C, and D) do not accurately describe the relative advantages of dry chemical versus CO2 fire extinguishers.