(19)

(11)

EP 0 203 133 A1

(12)

(43) Date of publication: 03.12.1986 Bulletin 1986/49 (21) Application number: 85905862.0 (22) Date of filing: 22.11.1985

(51) International Patent Classification (IPC):  A62B 11/ 00( . ) B63C 11/ 24( . ) (86) International application number: PCT/GB1985/000540 (87) International publication number: WO 1986/003171 (05.06.1986 Gazette 1986/12)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 23.11.1984 GB 19840029706 (71) Applicant: GAS SERVICES OFFSHORE LIMITED Aberdeen AB3 6TQ (GB)	(72) Inventors: CLARKE, Derek William Aberdeenshire (GB) MURRAY, Brian Aberdeenshire (GB) RODOCKER, Donald Lynn Milltimber Aberdeenshire (GB) (74) Representative: Geering, Keith Edwin, et al  REDDIE & GROSE 16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)