While discharging a tanker, how can list be controlled?

Controlling list during the discharge of a tanker is crucial for maintaining stability and ensuring safe operations. Using wing tanks located near the longitudinal center allows for precise management of the vessel's weight distribution. By discharging from these tanks as necessary, the operator can shift the center of gravity and counteract any list that may develop due to uneven loading or discharge of cargo from one side of the vessel.

This method is particularly effective because the wing tanks are strategically placed lateral to the ship’s center of gravity, which minimizes the effects of a list that might occur if liquid is removed disproportionately from one side. By managing the discharge from both sides, the tanker's stability can be maintained, preventing excessive tilting that could lead to dangerous situations.

Other options may involve different processes or locations for managing list, but they may not provide the same level of control or effectiveness. For instance, while using the after peak tank could help to some extent, it is less effective in directly addressing lateral list compared to the immediate adjustment possible with the wing tanks. Additionally, relying solely on shoreside personnel would not offer the same responsive capability onboard. Similarly, using a center tank near the bow might not provide the necessary balance to counteract lateral movements effectively.