(19)

(11)

EP 1 866 668 A2

(12)

(88) Date of publication A3: 28.12.2006 (43) Date of publication: 19.12.2007 Bulletin 2007/51 (21) Application number: 06725292.4 (22) Date of filing: 23.03.2006

(51) International Patent Classification (IPC):  G01V 1/20(2006.01) (86) International application number: PCT/EP2006/061016 (87) International publication number: WO 2006/100302 (28.09.2006 Gazette 2006/39)

(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: 24.03.2005 IT TO20050192 (71) Applicant: Whitehead Alenia Sistemi Subacquei S.p.A. 57124 Livorno (IT)	(72) Inventors: MARASCO, Renato I-80070 Bacoli (IT) BALBI, Mario I-80070 Monte Di Procida (IT) (74) Representative: Jorio, Paolo et al STUDIO TORTA S.r.l. Via Viotti, 9 10121 Torino 10121 Torino (IT)