175-WLM_541_1_1_-_H.pdf

This is a detailed fuel oil system diagram set showing technical specifications and layout plans for a ship's fuel system. The drawings include a material schedule, system design requirements, major equipment table, instrument list, relief valve list, and flow data specifications on the first page. Subsequent pages show detailed mechanical drawings of the service system, transfer system, and overall fuel oil system layout including pipe routing, valve locations, tank positions, and equipment placement across multiple decks (HB 920, HB 930, HB 940).

The diagrams contain specific technical details like pipe sizes, flow rates, pressure specifications, and equipment designations that would be relevant for maintenance, repairs or modifications to the vessel's fuel system. Key components shown include fuel oil pumps, storage tanks, service tanks, transfer lines, relief valves, and associated instrumentation. The drawings appear to be part of a larger technical documentation package referenced as drawing number HB13140175-WLM-541-001 and include notes indicating these specifications apply to hull 553 and other vessels.