The correct answer is C) Planned maintenance management module. The planned maintenance management module of a comprehensive computerized maintenance system database would contain data such as work and safety procedures. This module is responsible for storing and managing information related to the preventive and scheduled maintenance activities for the vessel or equipment. It would include details on the required maintenance tasks, the procedures to be followed, and any relevant safety protocols. The other options are incorrect because they do not directly relate to the storage of work and safety procedures. The equipment management module would contain information about the equipment itself, the requisitions management module would handle procurement and purchasing, and the inventory management module would track the availability of spare parts and supplies.