A ship that reduces the total amount of fossil fuels and other energy sources required, thereby saving energy. The ship ( 1 ) has a plurality of subsystems ( 10 ) constructed by dividing a network of power supply lines ( 3 ) and signal lines ( 4 ) into groups. The subsystems ( 10 ) consist of at least two subsystems among a bridge subsystem ( 10 a ) on the bridge; a propulsion subsystem ( 10 b ) in an engine room; a deck subsystem ( 10 c ) installed on a deck; a ballast cargo subsystem ( 10 d ) for ballasting and equipment installed in a hold; and an information processing subsystem ( 10 e ) corresponding to communication equipment. The subsystems ( 10 ) each have a storage battery ( 5 ) and a smart meter ( 6 ), each of which is linked to a microgrid monitoring and control system ( 2 ), which detects the amount of electric power consumed by the subsystems ( 10 ), and controls the transfer of electric power between the subsystems.
1. A ship, characterized in that
the ship comprises:
a main engine and an auxiliary engine independently of each other, the main engine being configured to obtain propulsive power, the auxiliary engine being configured to generate electric power; and
a plurality of subsystems constructed by dividing a network of power supply lines and a network of signal lines for transmitting information into a plurality of groups,
the plurality of subsystems include at least two of a bridge subsystem for equipment of a bridge, a propulsion subsystem for propulsion equipment in an engine room, a deck subsystem for equipment installed on a deck, a ballast cargo subsystem for equipment for ballast operation and equipment installed in a hold, and an information processing subsystem for communication equipment,
the plurality of subsystems each have a storage battery and a smart meter, and are each linked to a microgrid monitoring and control system, and
the microgrid monitoring and control system is configured to weight the plurality of subsystems to determine to which of the subsystems to supply electric power in priority.
2. The ship according to claim 1 , characterized in that an electric generator is connected to the microgrid monitoring and control system, and
the electric generator is at least one of a photovoltaic generator, a wind generator, a fuel cell, a diesel generator, a power turbine generator, a turbo generator, and a shaft generator.
3. The ship according to claim 1 , characterized in that the microgrid monitoring and control system is configured to, while the ship is berthing at a quay, receive electric power from a land power supplying facility installed on the quay through a land power receiving facility installed on the ship and supply the electric power to the storage batteries.
4. The ship according to claim 1 , characterized in that any one of the propulsion subsystem and the deck subsystem includes an electro-hydraulic actuator which operates equipment and an electric line through which to supply electric power to the electro-hydraulic actuator.
5. The ship according to claim 1 , characterized in that the ship is an electric propulsion ship including the electric generator, the storage batteries, and a main engine configured of a motor.
6. The ship according to claim 2 , characterized in that the microgrid monitoring and control system is configured to, while the ship is berthing at a quay, receive electric power from a land power supplying facility installed on the quay through a land power receiving facility installed on the ship and supply the electric power to the storage batteries.