A21 - Encl-26_702-D720-01 - Electrical System One Line Diagram (ACandDC).pdf

This is a technical electrical system one-line diagram document showing the AC and DC electrical distribution systems for what appears to be a marine vessel. The diagram details power distribution panels, circuit breakers, transformers, and electrical connections across multiple sections including AFT, FWD and other areas.

The diagrams include both 24VDC starting systems and main engine firing systems, showing detailed electrical connections and components like breakers, switches, and power distribution nodes. The document appears to be an engineering specification drawing referenced as document number 702-D720-01 and is part of a larger solicitation package (W912PM25Q0009) for repair services at Murden Shipyard. The diagrams provide the technical specifications necessary for contractors to understand the vessel's electrical systems when preparing quotes for repair and maintenance work.