Large vessel's building berth of transfer under water system

The utility model relates to a technical field is built to boats and ships, especially indicates a large vessel's building berth of transfer under water system. It specifically does: set up on the track on the floating dock and move ship dolly and cross braces, wu keng department with the floating dock top after the waiting to move for the boats and ships tow boat and move the ballast and sink offloating state, the floating dock drainage rise to rise with wait to move boats and ships fall on the floating dock move ship dolly and cross braces on, the hydraulic pushing system is installed in the track butt joint of moving the floating dock to pier and building berth again, will wait to move boats and ships by the hydraulic pushing system and pass to the building berth on, accomplishes the whole ship process of moving. The utility model discloses an instruments such as ship dolly, cross braces that move are for general molding die dress, and the technology maturation is reliable, and areapplicable in various lar