Calculated ratios are obtained for choosing the efficiency of a water jet (jet or pump) propulsion (VD), which is determined by the product of the efficiency of the jet – ηst and the impeller – ηrk. A diagram of the pump characteristics is given. It is shown that as the speed of the vessel increases, the efficiency of the jet increases, and the efficiency of the impeller remains unchanged if there is no cavitation in accordance with formula (10). It is generally assumed that at ship speeds over 60 knots, the efficiency of the VD exceeds 60% and becomes higher than the efficiency of the propeller of the GVD. For a traction electric drive, taking into account the battery (AB), along with calculating the efficiency of the mover, the efficiency and traction characteristics of the electric motor (ED) should be taken into account. As an example, the characteristics of the "AB–ED-mover" system are given, depending on the speed of rotation of the rotor and the load.

For an organization that owns technological equipment, machines and production infrastructure, it is important to ensure the controllability of the processes of their operation, maintenance and repair (MRO). This task becomes more complicated with the increase in the number of operated facilities and with the distribution at several production sites. In these conditions, the only tool that provides management is the MRO information system. The article discusses the issues of implementing such a system and its capabilities.

The purpose and composition of the magnetic resonance imaging (MRI) are described, the classification of MRI types is given. Data on the design of MRI devices and the implementation of superconducting magnetic systems (SMS) are presented. The variants of the development of SMS for the implementation of magnetic field inductions up to 9 T and for promising tokomaks and MHD propellers up to 20 T are considered.

A qualitative analysis of the ship's MHD propulsion was performed and it was shown that in order to achieve its acceptable efficiency, it is necessary to ensure the implementation of magnetic field induction over 10 T. This inductance ensures an efficiency of over 30% even at a high underwater speed of 50–70 knots. The technical problems of the implementation of the MHD propulsion system in terms of the implementation of a superconducting magnetic SMS system are considered. The designs of conduction and induction, channel and non-channel MHD propellers are given. The efficiency of increasing the power of MHD installations and improving modern technologies of warm superconductivity in terms of tokamaks is shown, which suggests their real implementation in the near future, at least for large tankers and icebreakers, as well as submarine fleet facilities.

The article developed a computer model for the study of starting transient processes of an induction motor with a squirrel-cage rotor, which serves as an electric drive for a pumping unit. The simulation results are presented in the form of graphs of transient processes of the main parameters of an induction motor, such as current, speed and torque. The novelty of the work can be attributed to the simulation of an induction motor in absolute units, since relative units are usually used to simplify the process of modeling AC machines.

The paper considers a simulation model of a 10 kV distribution electric network developed by the authors to study the possibility of using electricity storage systems to increase energy efficiency, built in the Matlab Simulink software package. The diagrams of a 10 kV distribution electrical network and a simulation model are presented, the adequacy of the developed model is checked.