(19)

(11)

EP 1 663 774 A1

(12)

(43) Date of publication: 07.06.2006 Bulletin 2006/23 (21) Application number: 04761306.2 (22) Date of filing: 20.09.2004

(51) International Patent Classification (IPC):  B63B 39/04(1968.09) G05D 1/08(1968.09) (86) International application number: PCT/AU2004/001271 (87) International publication number: WO 2005/028295 (31.03.2005 Gazette 2005/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 19.09.2003 AU 2003905118 (71) Applicant: Sea Gyro Pty Ltd. Bentley, WA 6102 (AU)	(72) Inventor: AYRES, Colin C. Perth, Western Australia 6166 (AU) (74) Representative: Pedder, James Cuthbert et al Crown House, 2-8 Gloucester Road Redhill, Surrey RH1 1FH Redhill, Surrey RH1 1FH (GB)