There are both DC (direct current as from 12 volt batteries) and AC (alternating current like what you use in your house) systems and issues on many boats, although some boats, particularly smaller ones, only use DC.

Boats usually use DC power. DC stands for Direct Current – this means that the current flows in only one direction. DC comes mainly from batteries and is a low voltage. Most equipment on small boats is designed to run on DC power.

Electricians wire the world, connecting homes, factories, businesses, construction sites and much more to the electrical grid. Marine electricians are responsible for the electrical wiring that powers the equipment and fixtures found on a ship or in a shipyard.

The electricity which is produced, supplied and distributed onboard ship, port, drydock, shipyard for running or repair of the cargo and passenger ships is referred to as Marine electricity.