This part of IEC 60092 specifies requirements for all electric propulsion plants and gives the specifications, system design, installation and testing of at least: – generators and their prime movers; – switchboards; – transformers/reactors; – semiconductor convertors; – propulsion motors; – excitation systems; – control, monitoring and safety systems; – wires, cables, busbars, trunking systems; – harmonic filters. Bow and stern thrusters intended as auxiliary steering devices, booster and take-home devices, all auxiliary generating plants, and accumulator battery powered propulsion machinery and equipment are excluded.