Abbreviations & Acronyms beginning with O:

O/B = on board 

OBO = ore/bulk/oil carrier Continued below

OCA = Offshore Contractors Association

OCIMF = Oil Companies International Marine Forum 

OCR = optical character recognition 

OCS = Outer Continental Shelf

OCSLA = Outer Continental Shelf Lands Act

OD = Outer Diameter

ODT = Oil Down To

OECD = Organization for Economic Cooperation and Development 

OES = Office of Emergency Services

OG = Oil and Gas Directorate

OGITF = Oil & Gas Industry Task Force

OGML = Oil, Gas and Mineral Lease

OIAC = Oil Industry Advisory Committee

OLF = Norwegian Oil Industry Association

OMBO = One Man Bridge Operation  

OOD = Officer of the deck 

OOW = Officer of the watch

OPA 90 = US Oil Pollution Act of 1990

OPEC = Organisation of Petroleum Exporting Countries  

OPEX = Operating Expenditure

OPITO = Offshore Petroleum Industry Training Organization

OPITO = The Oil & Gas Academy

OPPR = oil pollution preparedness and response 

OPR = Office of Planning and Research

OPRC = International Convention on Oil Pollution Preparedness, Response and Co-operation

OPS = US Office of Pipeline Safety

ORRI = Overriding Royalty Interest

OSCP = Oil Spill Contingency Plan

OSHA = Occupational Safety and Health Administration

OSPAR = Oslo & Paris Convention for the Protection of the Marine Environment of North East Atlantic

OSPR = Oil Spill Prevention and Response

OSRA = Oil Spill Risk Analysis

OSRP = Oil Spill Response Plan

OSRV = Oil Spill Response Vessel

OSV = Offshore Support Vessel  

OTO = Oil Taxation Office (of the Inland Revenue)

OWC = Oil Water Contact

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