| 摘要 |
Disclosed is a semi-submersible drilling rig which reduces the construction time and labor of a ship by simplifying the structure of braces for connecting a pontoon to an upper deck, and remarkably reduces the influence of waves by minimizing an area touching seawater. The semi-submersible drilling rig comprises: diamond-shaped braces which connect a pair of facing pontoons to each other; and a pair of arch-shaped braces which are arranged between a pair of facing columns located in the front and rear parts of the pontoons and are connected to the facing columns located in the front and rear parts of the pontoons and an upper deck, respectively, to reinforce a hull structure by supporting the upper deck. |
