Ship dragging system

The invention discloses a ship dragging system and belongs to the technical field of ships. The system comprises at least one tow boat and a floating body connected with the tow boat; a plurality of bollards are arranged at intervals at the two sides of the floating body, respectively; sliding ring capable of sliding in the axial direction of the bollards sleeve the bollards; cable locking rings are welded on the sliding rings. The system is characterized in that the tow boat and the floating body connected with the tow boat are arranged, the plurality of bollards are arranged at intervals at the two sides of the floating body, respectively, one cable locking ring is arranged on each bollard, and as the cable locking rings are provided, a ship in a ship lock can be connected with the floating body by use of cables and the cable locking rings, and furthermore, the ship connected to the floating body is dragged out of the ship lock by virtue of the tow boat; compared with that the ship in the ship lock goes out of the lock in a self-propelling manner, the navigation efficiency is high with the help of the ship dragging system.