Floating type storage and unloading device

The utility model relates to the technical field of floating production oil storage and discharge devices, in particular to a floating storage and discharge device. The floating type storage and unloading device comprises a side outer plate, a bottom plate and a deck, the deck is installed on the side outer plate, the side outer plate, the bottom plate and the deck are connected to form a cargo hold area, and the bottom plate is of a single-layer structure. The multiple pairs of supporting components are installed in the cargo hold area at intervals in the length direction of the cargo hold area, and each pair of supporting components is connected with the two opposite inner side walls of the broadside outer plate; the middle longitudinal bulkhead is arranged in the cargo hold area in the length direction of the cargo hold area, and the multiple pairs of supporting components are connected in series through the middle longitudinal bulkhead. The bottom plate is arranged to be a single layer, the middle longitu