Why is it that most ships have a shaft generator as well as a gearbox, and some has just have a gearbox? What's the difference? - Quora
Energies | Free Full-Text | Application of Generator-Electric Motor System for Emergency Propulsion of a Vessel in the Event of Loss of the Full Serviceability of the Diesel Main Engine
WETech to Deliver Two Permanent Magnet Shaft Generators
Understanding Different Operational Modes Of Shaft Generator On Ships
A decision making tool concerning retrofit of shaft generator frequency converter - ScienceDirect