What type of pump is typically used as a portable firefighting pump aboard ships?

• A. Centrifugal pump (driven by electric motor or diesel).
• B. Positive displacement pump.
• C. Diaphragm pump.
• D. Gear pump.

Answer: (A)

This question is about choosing the pump type that moves water in large volumes quickly, which is essential for fighting shipboard fires. A centrifugal pump fits this need best because its impeller rapidly adds velocity to the water, producing a high flow rate with moderate discharge pressure. That combination is ideal for supplying one or more fire hoses and monitors, giving quick knock-down of flames.

The unit is also practical for ship use: it’s simple, rugged, and easy to maintain, and it can be powered by either an electric motor or a diesel engine, offering flexible deployment options on a vessel. Other pump types focus more on very high pressure or handle fluids differently, but they don’t deliver the large-volume flow as efficiently as a centrifugal pump, which is why they’re not the typical choice for the portable firefighting pump aboard ships.