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, edge beams and cantilever beams, the main plate body is a layer of plate body or two layers of plate bodies which are horizontally arranged on the two sides of a semi-submersible fan buoyancy tank in an overlapped mode, the edge beams are fixedly arranged on the free edges, opposite to the outer side of the semi-submersible fan buoyancy tank, of the main plate body, and the cantilever beams are arranged on the edge beams. 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 beneficial effects that compared with an existing heaving cabin, the heaving suppression device in the scheme is flatter in structure, and the additional mass can be more efficiently improved. Wherein the main plate body is used for re