The invention relates to an
underwater installation process of a removable
deck of a million-
ton roll-on-roll-off ship. The
underwater installation process is particularly suitable for the removable
deck of the million-
ton ship, and therefore the removable
deck can be guaranteed to be installed inside the million-
ton ship successfully, and construction time of a ship occupying a shipway. According to the
underwater installation process of the removable deck of the million-ton roll-on-roll-off ship, after the ship launches, the removable deck of double
layers and a removable slope way of double
layers are transported into a cabin through a floating crane and a flat car, and are hung between a main deck and an upper deck, integrally installation is carried out through a hand-drive block, and fixation is carried out through hoisting pads and steel wire ropes, the removable deck is dragged through the steel
wire rope hung on the upper deck, the removable deck is guaranteed to move vertically by utilizing a guide rail inside a boardside cabin, can be packed up when not used, and can be released when used, and the working stability of the removable deck is guaranteed through a foldable drawing rod.