Part I designated owners of platform apparatusand riser

Amerada Hess Limited, 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, WestGate, Ealing, London W1X 0AN.

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

Britoil plc, 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.

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.

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

Deminex UK Oiland Gas Limited, 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 Explorationand Production UK Limited, whose registered office is at Esso House, Victoria Street, London SW1E 5JW.

Monument Explorationand Production Limited, whose registered office is at 17 Bedford Square, London WC1B 3JA.

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

Premier Consolidated Oilfields PLC, whose registered office is at 25 Charlotte Square, Edinburgh EH2 4EZ.

Santa Fe Exploration (U.K.) Limited whose registered office is at Parnell House, 19/28 Wilton Road, London SW1V 1LZ.

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 Limited, whose registered office is at 141 Moorgate, London EC2M 6TX.