Several electrical machines and panels are fitted onboard ships to sail from one port to another safely and efficiently.

The electrical machinery and system require scheduled maintenance and checks to avoid any breakdown during sailing.

Different instruments are used onboard for measuring several electrical parameters to analyze and keep these machines in proper running condition.

A permanent magnet moving coil (PMMC) is one such instrument that is popularly used onboard and has several applications. The other popular nomenclature of this instrument is D’alvanometer and galvanometer.