Heaving suppression device suitable for semi-submersible fan platform

The heaving suppression device suitable for the semi-submersible fan platform comprises a main plate body, an edge beam and a cantilever beam, the main plate body is a one-layer plate body or two-layer plate bodies which are horizontally arranged on the two sides of a semi-submersible fan buoyancy tank in an overlapped mode, the edge beam is fixedly arranged on the free edge, opposite to the outer side of the semi-submersible fan buoyancy tank, of the main plate body, and the cantilever beam is fixedly arranged on the edge beam. The end of the edge beam is fixedly connected with the outer side of the semi-submersible fan buoyancy tank, and the main plate body is connected with the semi-submersible fan buoyancy tank through a cantilever beam. The heaving suppression device has the advantages that compared with an existing heaving cabin, the heaving suppression device in the scheme is flatter in structure, and the additional mass can be improved more efficiently. Wherein the main plate body is used for reinforc