In which circumstances can a commercial vessel operate in emergency situations?

A commercial vessel can operate in emergency situations as long as safety protocols are followed because safety protocols are designed to ensure the well-being of both the crew and passengers, as well as the safe operation of the vessel itself. These protocols may include communication procedures, equipment checks, and measures to assess the suitability of the conditions in which the vessel is operating.

In emergency situations, adhering to established safety protocols becomes even more critical as they help mitigate risks and prevent accidents. This ensures that the vessel can respond effectively to emergencies while maintaining a focus on the safety of everyone aboard.

Other circumstances provided in the options do not encompass the broad requirement of adhering to safety protocols. For instance, relying solely on a designation by a harbor master or on passenger requests does not guarantee that all safety measures are in place. Similarly, operating during severe weather conditions may pose significant risks, and safety protocols could dictate whether such operations are permissible. Therefore, the focus on following safety protocols encompasses the necessary precautions that should always be in place during any operation of a commercial vessel in emergency situations.