Shipboard Automatic Watchstander

Crew sizes in the Navy and Coast Guard continue to decrease. Optimally or minimally manned crews complete ever more complex and varied mission sets. Accordingly, crews rely on sensors and automatic operation to perform a host of duties formerly completed manually. The Non-Intrusive Load Monitor (NILM) provides a low cost, low-maintenance, rugged, easily installed tool for machinery monitoring from a centralized location. This paper presents a real-world application and case study of a power monitor installed on a USCG Famous Class (270 ft) Cutter’s “Engine Room Auxiliary Machinery” panel, monitoring eight key pieces of machinery. The NILM effectively determines machinery status. Comparison is made here to crewgenerated logs, demonstrating the NILM’s ability to effectively disaggregate equipment operation from aggregate power data.