A pump watch must be alert for __________ around the strainer and must ensure the strainer remains __________.

The role of a pump watch is critical to ensuring the efficiency and safety of the pumping system, especially in a marine environment. When monitoring the strainer, it's essential to be vigilant for any debris that might obstruct the intake, as this can impair the pump's ability to draw in water effectively. Debris can include items such as leaves, pieces of wood, seaweed, and garbage, which can accumulate around the strainer and cause clogging.

Additionally, maintaining a clean strainer is vital. A clean strainer allows for optimal water flow, ensuring that the pump operates efficiently and reducing the chances of the pump running dry or overheating. If the strainer is not kept clean, it can lead to reduced water intake, which can compromise the pump's proper functioning and, subsequently, the safety of the vessel.

In contrast, the other options suggest specific conditions or materials that are less relevant to the pump watch's duties. For example, monitoring for rocks or ensuring the strainer remains wet is not aligned with the primary concerns of debris accumulation and strainer cleanliness. Ensuring that there is no oil or sand present around the strainer also does not convey the same critical need to maintain clear water intake as debris does. Therefore, the emphasis on being