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EP 4 798 494 A1

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(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24798484.2 (22) Date of filing: 25.10.2024

(51) International Patent Classification (IPC):  B63B 21/50(2006.01) G01M 5/00(2006.01) G01N 29/07(2006.01) G01B 11/16(2006.01) G01B 17/04(2006.01) G01B 11/02(2006.01) (52) Cooperative Patent Classification (CPC): G01N 29/07; G01B 11/026; G01B 17/04; G01B 11/16; G01M 5/0025; B63B 2021/008; B63B 2021/203; B63B 21/20 (86) International application number: PCT/EP2024/080315 (87) International publication number: WO 2025/088174 (01.05.2025 Gazette 2025/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 25.10.2023 GB 202316347 (71) Applicant: 4Subsea AS 1383 Asker (NO)	(72) Inventors: GRØNNINGSÆTER, Åge 26 N-1383 Asker (NO) JENKINS, Peter Erik 26 N-1383 Asker (NO) (74) Representative: Keltie LLP  No. 1 London Bridge London SE1 9BA London SE1 9BA (GB)