While pumping ballast the Chief Mate reports there is a decrease in vacuum on the pump suction when drawing from a partially full saddle tank. Which of the following could be a possible cause?

Question

Accepted Answer

An air leak in the suction piping from the tank.

Answer

The suction valve from the pump is partially closed.

Answer

The tank suction valve is partially closed.

Answer

The pump suction strainer is clogged.

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