DI-031_REV_2_ELECTRICAL_SYSTEM_ONE_LINE_DIAGRAM.pdf

This document is an Electrical System One Line Diagram for the United States Department of the Interior, specifically for a Lake Superior project. The comprehensive 11-page technical drawing details the electrical infrastructure, including main switchboards, emergency generators, power distribution panels, and electrical connections for various systems such as propulsion motors, lighting, and equipment across different vessel decks and areas.

The diagram shows two primary propulsion systems - a starboard and port propulsion motor, each rated at 315kW with associated engine, electrical motor, and gearbox. The electrical system includes multiple 480VAC and 208/120VAC switchboards, emergency power systems, and distribution panels covering areas like main deck, pilot house, emergency lighting, crew spaces, and various equipment circuits. The design incorporates redundant power sources, including shore power connections, transformers, and battery emergency systems (BESS), ensuring comprehensive electrical reliability and coverage for the marine vessel's operational requirements.