(19)

(11)

EP 1 848 629 A1

(12)

(43) Date of publication: 31.10.2007 Bulletin 2007/44 (21) Application number: 06709762.6 (22) Date of filing: 15.02.2006

(51) International Patent Classification (IPC):  B63B 23/32(2006.01) B63C 3/12(2006.01) (86) International application number: PCT/GB2006/000525 (87) International publication number: WO 2006/087540 (24.08.2006 Gazette 2006/34)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 15.02.2005 GB 0503083 (71) Applicant: The Engineering Business Limited Riding Mill, Northumberland NE44 6EG (GB)	(72) Inventors: GRINSTED, Timothy, William Stocksfield NE43 7TN (GB) WATCHORN, Michael, John Stocksfield, Northumberland NE43 7LU (GB) (74) Representative: Harrison Goddard Foote  Belgrave Hall Belgrave Street GB-Leeds LS2 8DD GB-Leeds LS2 8DD (GB)