Ship board protective device

The utility model discloses a ship board protective device. The ship board protective device comprises a fixing board installed on a ship board and a plurality of collision-preventing units transversely arranged on the fixing board at intervals. Each collision-preventing unit comprises two collision-preventing assemblies which are arranged in the vertical direction in a spaced mode. Each collision-preventing assembly comprises a sliding part, a stress part and a buffer mechanism, wherein the stress part is in a semispherical shape, one end of the sliding part is installed on the fixing board, the sliding part can move up and down along the fixing board when borne with force, the other end of the sliding part is connected with the bottom end of the stress part, a cavity is formed in the stress part, and the buffer mechanism is arranged in the cavity. The ship board protective device has the advantages that in the protecting process, a gap exists between the two collision-preventing assemblies of each collision-preventing unit, under the action of buoyancy of water, the positions of the two collision-preventing assemblies of each collision-preventing unit will be adjusted, the protecting range of the ship board is increased, and the protecting effect is good.