Method for feeding the external power mains power on board vessels.

Method for supplying electrical power to electrical power networks on-board ships, in which there is at least one generator, converter and electrical loads in the power grid on board the vessel, in which the converter (7 , 12) (shore connection converter) located on board the ship, for transfer to the network board power is fed into the inlet side by a source (2) connectable external current with a current It carries a frequency and different voltage of network power board, and this current is converted into semiconductors of the converter current with the voltage and frequency of the power grid board, and fed to the power network board, characterized in that, in boats with electric propulsion system, eg cruise boats, large yachts or military (navy) ships, at least one converter system propulsion (11) (converter of a propulsion motor, a servo motor or a drive motor) is used as the shore connection converter (7, 12).