What happens to the remaining oil when all of the oil that the main cargo pumps can handle is pumped out of a tank?

The correct answer involves the process of stripping the remaining oil from a tank after the main cargo pumps have exhausted their capacity. When a tank has been emptied as much as possible, the remaining oil is not usually left behind but is instead collected for further handling.

Stripping to one tank allows for the efficient collection of any residual oil that remains in the tanks. This collection is typically done to avoid leaving any significant amount of oil behind, which can be important for maintaining the safety and environmental standards of tanker operations. After all of the remaining oil in the tank is gathered into a single tank, it can then be efficiently pumped out using the main pumps. This method ensures that the remaining oil is handled in a controlled manner and reduces the risk of spillage or wastage.

In contrast, other methods such as directly pumping the remainder ashore or using a gravity system to collect oil would not provide the same level of efficiency and control in handling the leftover oil. Stripping to one tank and then utilizing the main pumps is a standard operating procedure in tanker operations that maximizes the recovery of oil and minimizes environmental impact.