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OFFSHORE TERMS AND ABBREVIATIONS
 
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Terms

Marine Riser - large diametre casing, consisting of many pipe sections coupled together, normally
with floating elements on the outside. Installed between the Marine BOP and the drilling rig.
Monkey Board - platform in the drilling tower where the Derrick Man is handling the drill stem.
Monopod - type of rig where the foundation consists of a cylindric stem from the seabed to the
surface.
Motion Compensator - equalizes level variations during drilling from floating rigs or cranes.
Mousehole - hole in the Derrick platform where the next section of drill stem is placed awaiting to be
coupled to the drill stem.
Mud - drill mud.
Mud Line - the sea bed, the borderline between the water and solid sediments.
Mud Pit - tank containing the drill mud.
Mud Weight - the weight of the drill mud in pounds per gallon. Light mud: 8 pounds/gln; heavy mud:
14 pounds/gln.

Abbreviations

MARAD - Maritime Administration (USA) - authority under the US department for Trade. Handles
subsidies etc. to American shipyards and shipping companies.
MARINTEK - Norsk Marinteknisk Forskningsinstitutt A/S (Trondheim) - Norwegian maritime research
institution.
MARPOL - International Convention for the Prevention of Pollution from ships (London)
MEIF - Mandatory Excess Insurance Facility - Norwegian-Swedish-Greek proposal to solve the
COFR-question.
MEPC - Maritime Environment Protection Committee (IMO, London)
MITS - Maritim information technology.
MSC - Maritime Safety Committee (IMO, London)
MTC - Maritime Transport Committee (OECD)
MUI - Maritime Union of Indian Officers

   
 

 
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