What must be ensured before starting operation on a commercial vessel?

Before starting operation on a commercial vessel, it is essential to ensure that all safety equipment is checked and operational. This includes verifying that life vests, fire extinguishers, flares, first aid kits, and other safety gear are present, functioning, and easily accessible in case of an emergency. The safety of the crew and passengers is the highest priority, and having reliable safety equipment is crucial for responding effectively to any potential incidents while at sea.

While maintaining cleanliness, seating arrangements for passengers, and monitoring the weather are important considerations, they do not directly affect the immediate operational safety of the vessel in the same way that ensuring all safety equipment is functional does. Thus, the emphasis on the operational readiness of safety equipment stands out as the most critical action required before commencing vessel operations.