Sentences with semisubmersible rig
sem·i·sub·mers·i·ble rig
S s - The semisubmersible rig has an elevated drilling platform on top of a floating structure which is semisubmerged in the water.The semisubmersible rigs float with their lower hulls between 55 and 90 feet below the water line, and are held in place partly with anchors.A semisubmersible rig is a drilling rig which is designed to be partly under the water.