175-WLM_593_1_1_-_G.pdf

This is an engineering diagram showing the sewage and waste water system for a U.S. Coast Guard vessel. The diagram consists of multiple sheets detailing system design requirements, material schedules, flow data, major equipment tables, instrument lists, and detailed piping layouts across different decks of the vessel including the platform & hold, main deck, and O1 level & forecastle deck.

The technical drawings include specifications for sewage discharge pumps, vacuum collection pumps, and tank level monitoring systems. The system includes various components like gage pressure instruments, vacuum gages, and flow control systems identified by specific equipment numbers. The diagrams show detailed piping connections, valve locations, and equipment placement throughout different areas of the vessel including the engine room, crew spaces, and waste collection areas. These engineering drawings would be relevant for contractors performing tank cleaning and inspection services on the vessel's grey water and sewage systems as referenced in the associated solicitation.