175-WLM_320_1_1_-_AT.pdf

This is an electrical one-line diagram showing power distribution schematics for various shipboard systems. The diagram details switchboard layouts for 450V and 120V sections, including emergency switchboards, and power panel configurations for different ship areas like the engine room, pump room, machine shop, and chart room. The drawings include specific circuit breaker arrangements, transformer locations, and power distribution paths for vital and non-vital systems.

The diagram consists of multiple sheets showing detailed electrical connections, protection devices, and load distributions across different voltage levels. Key components include transformers (both open and enclosed types), motor starters, circuit breakers, disconnects, and various electrical panels labeled P1 through P21. The drawings contain numerous technical annotations and references, including detailed notes about motor starting requirements, cable specifications, and grounding arrangements. This appears to be part of the technical documentation package related to circuit breaker testing and inspection services required for the USCGC Harry Claiborne.