Emergency Restore Feature Semi-Rig

Relates to a semi-League with emergency restoration function, measuring means for measuring a plurality of draft, height of the fixed columns perpendicular to the slope or puntun of the upper platform, a U-shaped tank, said U-shaped tank that is mounted between the column and the column in accordance with the load compression lean air supply means, the draft, height or predetermined angle or more measured by the measuring means for supplying compressed air to provide a control panel for controlling to supply compressed air to the U-shaped tank from the supply means to the column or puntun by damage or breakage can be prevented load sinking or tilting of the upper platform, the sinking or inclined to delay the burden can ensure the safety of crew members, and more stable to lower the center of gravity of the semi-league by giving filled with water in the U-shaped tank an effect that can be moored in a position to maintain a state is obtained.