Mobile communication relay service system and method for ship

The present invention relates to a system and a method for a mobile communication relay service for a ship and, more particularly, to a system and a method for a mobile communication relay service for a ship for providing a smooth mobile communication service for a ship in an ocean by setting a moving ship as a wireless base station relay node. According to the present invention, support can be provided such that mobile communication service relay can be performed for the ship requesting the mobile communication service by a signal being relayed for the ship in the ocean, which is not a service area of a mobile communication system, via communication with a ground base station and the optimal relay ship that can be used for long and has the best signal among a plurality of the relay ships moving on the sea being used as the wireless base station relay node. According to the present invention, a high-quality mobile communication service can be provided for the ship in the ocean and the mobile communication service area can be expanded to cover the sea.