Liberal Dictionary English Dictionary
noun
- Also called semisubmersible rig. a self-propelled barge that is mounted on partially submerged legs supported by underwater pontoons, rides at anchor, and serves as a work base and living quarters in deep offshore drilling operations.
adjective
- of, for, or pertaining to a semisubmersible.
noun
- (in the oil industry) a type of drilling platform that floats supported by underwater pontoons, with much of its structure below the water line for stability in high winds: usually used only for exploratory drilling for oil or gasSometimes shortened to: semisubmersible