What technical publication is used to provide info on the ship's engineering plant system?

The Propulsion Plant Manuals (PPM) serve as a key technical publication that provides detailed information regarding a ship's engineering plant systems. These manuals encompass a range of essential data, including system descriptions, operational guidelines, maintenance procedures, and troubleshooting tips for the propulsion system components. This makes them an invaluable resource for engineering personnel onboard, as they allow for efficient and safe operation and maintenance of the ship's propulsion systems.

While the other options may contain relevant information, they serve different purposes. For example, the Naval Ships Technical Manual (NSTM) is broader and covers various technical aspects of naval ships, while the Maintenance Procedures Manual focuses specifically on maintenance aspects. The Operational Procedures Document typically outlines operational protocols but may not delve as deeply into the technical details of the engineering plant systems as the PPM. Thus, the PPM stands out as the most focused resource for the engineering plant system information needed onboard a ship.