ABP Southampton

Addax Petroleum Cameroon Company S.A

Alpha Petroleum Resources Limited

Aluminum  Bahrain B.S.C

Anasuria Operating Company Limited

Angola LNG - Sucursal de Angola

Assala Energy UK Limited

Astron Energy (Pty)

Autoridad del Canal de Panamá

Azinam South Africa Limited

Baffinland Iron Mines Corporation

Bashayer Pipelines Company (BAPCO) FZCO Limited (BAPCO)

Bridge Petroleum Limited

Brunei Gas Carriers Sdn Bhd

Bunker (One) Mauritius Limited

Busrakham Oil (Thailand) Ltd

BW Energy Gabon SA

BW Maromba Holdings Pte Ltd

Capricorn Energy UK Ltd

CATS North Sea Ltd

Cayman Islands Government

China International United Petroleum & Chemicals Co. Ltd (UNIPEC)

Chrysaor E&P Limited

Cnergyico PK Limited

CNR International (U.K.) Limited

ConocoPhillips International Well Response Company AS

Crossbridge Energy

Dana Petroleum Limited

De Beers Marine Namibia (Pty) Limited

DNO North Sea (ROGB) Limited

Enauta Energia S.A.

Energean Group Limited

EOG Resources Trinidad Limited

Fairfield Betula Ltd

Foxtrot International LDC

Gassco AS

Gibraltar Port Authority

GTI Statia Terminals N.V.

Hans & Co Oil & Gas Ltd

Hengyi Industries Sdn Bhd

Heritage Petroleum Company Limited

Hurricane Energy Plc

IOG plc

IPC Services BV

Irish Coastguard (Department of Transport)

Irving Oil Whitegate Refinery Ltd

Ithaca Energy (UK) Limited

Jadestone Energy (Eagle) PTY Ltd

Jadestone Energy (PM) INC 

JX Nippon Oil & Gas Exploration Corporation

Karoon Petróleo & Gás Ltda.

KMG Systems and Services LLP

Le Ceppol

LLOG Exploration Company, L.L.C.

Mabruk Oil Operations (MOO)

Marathon Petroleum Company LP

Maritime and Coastguard Agency (MCA)

Maritime New Zealand - Marine Pollution Response Service (MNZ)

Medco Energi Thailand (Bualuang) Limited

Melones Oil Terminal Inc.

Ministry of Public Work and Transport (Cambodia - Merchant Marine Department)

National Maritime Safety Authority (NMSA)

NEO Energy Upstream UK Limited

Neptune E&P UK Ltd

Nigeria LNG Limited

Norpipe Oil A.S.

Norpipe Petroleum UK Limited

North Caspian Operating Company N.V

Northern Gulf Petroleum

NPG Pty Ltd

Oil Search (PNG) Limited

Oleoducto Central S.A. - OCENSA

OMV Exploration and Production GmbH

One-Dyas UK Limited

Oriental Energy Resources Ltd

Pan African Energy Tanzania Limited

Petrofac Malaysia PM-304 Ltd

Petrogas E&P Netherlands B.V.

Petrojam Limited

Petrolines for Crude Oil Limited (PETCO)

Petroterminal de Panama (PTP)

Polar Tankers, Inc

POSCO Internation Corporation

Prax Lindsey Oil Refinery Limited

Prime Energy Resources Development B.V

Refinadora Costarricense de Petroleo S.A. (RECOPE)

Refineria Dominicana De Petroleo, S.A.

Reliance Industries Limited

Rijkswaterstaat Zee En Delta

Rubis Energie

Sage North Sea Limited

Santos Ltd

Sasol Oil (Pty) Ltd

Sea Hibiscus SDN. BHD.

Serica Energy (UK) Limited

Singapore Lube Park Pte. Ltd. (SLP)

Sociedad de Salvamento y Seguridad Maritima (SASEMAR)

Sol Caribbean Limited

Sonangol Pesquisa E Produsao SA

Spirit Energy Resources Ltd

Staatsolie Maatschappij Suriname N.V

Stonewin (Mauritius) Limited

STS Marine Solutions (Bermuda) Ltd

Suncor Energy Inc

Supreme Council for Environment, Bahrain

Tailwind Mistral Ltd

TAQA Bratani Limited

Terminales Maritimas Patagonicas S.A. (Termap)

The Department of Industry, Science and Resources (DISR) - Australia

Thyna Petroleum Services

Trident Energy Management Limited

Trinity Exploration and Production Services Limited

Vaalco Gabon SA

Vale International SA

Valeura Energy (Gulf of Thailand) Ltd.

Vedanta Limited

Vermilion REP SAS

West Indies Oil Company Limited (WIOC)

Wintershall DEA AG

YPF S.A.

Zenith Energy Bantry Bay Terminal Ltd