Reversely-buckled ship hole forming sealed cabin

The invention discloses a reversely-buckled ship hole forming sealed cabin which comprises a top cover, a sealed cabin intermediate section and a base. The top cover is provided with an air source joint, a power joint, a lighting device and a lifting lug. The air source joint is connected with an external air compressor or an air bottle. The sealed cabin intermediate section is installed under thetop cover and comprises a cabin body and a cabin door. An observation window is installed on one side of the cabin body, and the cabin door is located on the side opposite to the observation window.The cabin body is further provided with a communication device used for communicating with the outside world. By the adoption of the above technical scheme, the reversely-buckled ship hole forming sealed cabin is firstly moved to the position with a hole forming requirement, one end of each bolt used for fixing the base and a hull is welded to a ship bottom board, the other end of each bolt is locked through a nut, and the