Part I DESIGNATED OWNERS OF PLATFORM APPARATUS AND RISER

Amerada Hess Ltd., whose registered office is at 2 Stephen Street, Tottenham Court Road, London W1P 1PL.

Amoco (U.K.) Exploration Company whose principal place of business in the United Kingdom is at Amoco House, West Gate, Ealing, London W5 1XL.

ARCO British Ltd., whose principal place of business in the United Kingdom is at ARCO House, 48 Grosvenor Street, London W1X 0AN.

Britoil p.l.c., whose registered office is at 301 St. Vincent Street, Glasgow G2 5DD.

Britoil Alpha Limited whose registered office is at Britannic House, Moor Lane, London EC2Y 9BU.

Conoco (U.K.) Ltd., whose registered office is at Park House, 116 Park Street, London W1Y 4NN.

Deminex UK Oil and Gas Ltd., whose registered office is at Bowater House, 68 Knightsbridge, London SW1X 7LD.

Enterprise Oil plc, whose registered office is at 5 Strand, London WC2N 5HU.

Esso Exploration and Production UK Ltd., whose registered office is at Esso House, Victoria Street, London SW1E 5JW.

Chevron (U.K.) Limited, whose registered office is at 2 Portman Street, London W1H 0AN.

Chevron U.K. Offshore Exploration Company Limited, whose registered office is at 2 Portman Street, London W1H 0AN.

Mobil North Sea Ltd., whose principal place of business in the United Kingdom is at Mobil Court, 3 Clements Inn, London WC2A 2EB.

Monument Petroleum Mitre Ltd., whose registered office is at 65 Kingsway, London WC2B 6QT.

Premier Oil Exploration Ltd., whose registered office is at 25 Charlotte Square, Edinburgh EH2 4EZ.

Sante Fe Minerals (UK) Inc., whose principal place of business in the United Kingdom is at Parnell House, 19/28 Wilton Road, London SW1V 1LW.

Shell U.K. Limited whose registered office is at Shell-Mex House, Strand, London WC2R 0DX.

Texas Eastern North Sea, Inc., whose principal place of business in the United Kingdom is at Berkeley Square House, Berkeley Square, London W1X 5LE.

Ultramar Exploration Ltd., whose registered office is at 141 Moorgate, London EC2M 6TX.