NOVELTY - The system has a propulsion power generation system including generators (2, 11) provided with high temperature superconducting (HTS) windings and a power converter i.e. pulse width modulated direct current (dc)-to-dc converter. The power generation system includes a power source e.g. diesel generator, supplying the power to a service distribution system. The service distribution system comprises switchboards (16, 20, 26, 28, 31, 33) and direct current distribution busbars (25, 27, 29) carrying a distribution voltage and a distribution current to the service distribution system.    USE - Marine power distribution and propulsion system for use on a marine vessel (claimed) e.g. ship and submarine.    ADVANTAGE - The system utilizes high temperature superconducting (HTS) windings to allow the propulsion motors to be operated with high air-gap shear stress in an easier manner without increasing a weight of the system, thus increasing the power density and efficiency of the system. The system is compact in size. The HTS windings are combined with a slotless armature winding to reduce noise and vibration of the marine vessel. The power converter can limit the fault current in the power distribution system in an effective manner without increasing design complexity of the system while maintaining a high quality of the power supply and aiding power distribution system stability.    DETAILED DESCRIPTION - The power source is selected from a group consisting of a diesel generator, gas turbine generator, steam turbine generator, combined cycle gas and steam turbine generator, closed cycle or non-air breathing diesel generator, battery, fuel cell, flow cell, flywheel generator, super-capacitor and a superconducting magnetic energy store.    DESCRIPTION OF DRAWING(S) - The drawing shows a circuit diagram of a marine power distribution and propulsion system.    Generators (2, 11)    Switchboards (16, 20, 26, 28, 31, 33)    Zonal energy store (22)    Zonal power supply unit (23)    Direct current distribution busbars (25, 27, 29)