Superconducting electrical machines for use in navy ships

A plurality of electrical machines based on superconducting technology, each of the machines, comprising:

• a rotor with superconductors;
• a rotor cryostat;
• a rotor shaft;
• a cryogenic connection to a cryogenic conductor between the cryostat and a cold generator, the cryogenic connection including a fixed cold head and a distributor, projecting into the rotor shaft area, for a liquid coolant;
• and
• a non-superconducting stator, wherein
• the plurality of electrical machines are designed to be shock-resistant, wherein
• the stator, the rotor and the cryostat are decoupled via elastic elements, in terms of movement, from an outer machine housing and from the rotor shaft, wherein
• the rotor, stator and cryostat include connecting elements and bearings between them, the connecting elements and bearings resulting in movement of the rotor, stator and cryostat as a unit when accelerated by shock, the movement of the unit being greater than a vibration amplitude, and wherein
• a flexible cryogenic line is arranged between the distributor for the liquid coolant and the cryostat.