What documentation governs the operational safety of machinery onboard?

The operational safety of machinery onboard a vessel is primarily governed by the safety management manual and class society regulations. The safety management manual outlines procedures and protocols that must be adhered to, ensuring that all safety practices are systematically followed to prevent accidents and maintain a safe working environment. This manual is part of the International Safety Management (ISM) Code, which promotes safety at sea, prevention of human injury or loss of life, and avoidance of damage to the environment and property.

Class society regulations are second in importance, as they establish the technical standards that vessels must meet to ensure safe operation. These regulations cover aspects such as maintenance, inspections, and machinery integrity, ensuring that all technical operations align with best practices for safety and reliability.

While the vessel's operational manual provides specific guidance on the functions and operation of onboard equipment, and the daily log captures operational activities, they do not serve as the overarching framework for safety like the combination of the safety management manual and class society regulations does. An insurance policy document may address liabilities and coverage, but it does not govern operational safety itself.