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OFFSHORE TERMS AND ABBREVIATIONS
 
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J

 

 

Terms

Jacket - the lower part of the production system from the seabed to the lower deck module.
Jackup - movable installation consisting of a large deck with legs which may be jacked up. During
operation, the legs are resting on the seabed, and the vessel "jacked up", leaving the deck in secure
position high above the surface of the sea. When moved, the legs are retracted and the installation
floates. Usually not equipped with own propulsion machinery. (Max. water depths 110 to 120 metres.)
Normally used as a drilling rig.
Jet Nozzle Bit - a type of drill bit.

Abbreviations

JR - Jugoslav Register - Yugoslav classification society.


 
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