How many potable water pumps are onboard the vessel?

The correct answer reflects the typical configuration of potable water pumps onboard naval vessels, where having four pumps—two in each Main Machinery Room (MMR)—ensures redundancy and reliability. This setup allows for sufficient pumping capacity to meet the vessel's needs and provides backup in case one of the pumps fails. The distribution of pumps into two separate MMRs also helps decentralize the water distribution system, which is essential for operational efficiency and safety.

This design ensures that even if one MMR experiences issues, the other can still supply potable water, maintaining the ship's functionality and the crew's access to drinking water. In naval operations where reliability is paramount, having a thoughtful distribution and sufficient number of potable water pumps is crucial for sustaining long missions at sea.