(19)

(11)

EP 0 681 543 A1

(12)

(43) Date of publication: 15.11.1995 Bulletin 1995/46 (21) Application number: 94905783.0 (22) Date of filing: 03.02.1994

(51) International Patent Classification (IPC):  B63C 11/ 48( . ) B63C 11/ 49( . ) (86) International application number: PCT/GB1994/000202 (87) International publication number: WO 1994/018067 (18.08.1994 Gazette 1994/19)

(84) Designated Contracting States: ES FR GB GR IE IT PT (30) Priority: 04.02.1993 GB 19930002204 (71) Applicant: AQUASCOPE ASSOCIATES LIMITED Poole, Dorset BH15 1NR (GB)	(72) Inventor: Guin, Patrick Poole, Dorset BH13 6AP (GB) (74) Representative: Couchman, Jonathan Hugh, et al  Hepworth Lawrence Bryer & Bizley Bloxam Court Corporation Street Rugby, Warwickshire CV21 2DU Rugby, Warwickshire CV21 2DU (GB)