The fishery companies have many ships and the operation team is not fixed. It is very costly to solve the problem of ocean-going broadband communication by installing satellite communication terminals on each ship. The fleets are divided into two types: command ship and task ship. During the operation on the sea, each group includes a command ship and a number of task ships. A mobile broadband multimedia communication network is established, supplemented by strategies such as multicast and automatic routing switching. The completed system can achieve broadband interconnection between any ship and between the ship and the command center. When the command ship and the mission ship form a random team, the link can be adapted, and the system does not need to be reconfigured. The broadband communication distance between the command ship and the mission ship is more than 20 km. The system can greatly reduce the construction cost and operation cost of the oceangoing broadband communication network of the fishery company.