jack-up rig

noun
an offshore drill rig or platform having a floating hull fitted with retractable legs that can be lowered to the seabed to elevate the hull above wave level.
Compare semisubmersible.


Origin:
1965–70

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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The crew of the jack-up rig cleaned the work site and departed the area the day before the accident.
Procedures using a jack-up rig moved onto the platform's north side.
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