Who must supervise operations such as connecting, disconnecting, and topping off aboard a tanker or tank barge?

The supervision of operations such as connecting, disconnecting, and topping off aboard a tanker or tank barge is the responsibility of the "person in charge." This designation is crucial as this individual is specifically tasked with ensuring that all safety and operational procedures are followed during these critical operations.

Having a dedicated person in charge helps maintain proper safety protocols and compliance with regulations, which is vital in preventing incidents that could lead to environmental damage or safety hazards. This individual is typically knowledgeable about the operational and safety requirements related to the transfer of cargo and is accountable for overseeing the personnel involved in these activities.

While other roles, such as the master of the vessel, or a certificated tankerman, may have oversight responsibilities or contribute in a significant way, it is specifically the person designated as "person in charge" who is held accountable for managing the operation directly. This clarity in responsibility is essential for the safe and efficient handling of cargo on tankers and tank barges.