A gurgling noise is heard from within a cargo tank when discharging cargo, this would indicate that the __________.

Correct Answer: Option B — pump is sucking air

A gurgling sound during cargo discharge indicates the pump is drawing air rather than liquid, commonly known as 'losing suction.' This occurs when the liquid level in the tank drops below the bellmouth or suction intake, allowing air to enter the pump casing, which can lead to cavitation and damage.