(19)

(11)

EP 4 823 915 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24821310.0 (22) Date of filing: 05.12.2024

(51) International Patent Classification (IPC):  B63C 9/04(2006.01) B63C 9/125(2006.01) B63G 8/40(2006.01) B63C 9/105(2006.01) B63C 9/00(2006.01) (52) Cooperative Patent Classification (CPC): B63C 2009/0023; B63C 9/1255; B63C 9/1055; B63C 2009/042; B63G 2008/406; B63C 9/04 (86) International application number: PCT/EP2024/084881 (87) International publication number: WO 2025/125079 (19.06.2025 Gazette 2025/25)

(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: 15.12.2023 GB 202319231 (71) Applicant: RFD Beaufort Limited Ellesmere Port CH65 1AX (GB)	(72) Inventor: LITTLER, Stephen Wirral Merseyside CH46 7UF (GB) (74) Representative: Mathisen & Macara LLP  Charta House 30-38 Church Street Staines-upon-Thames TW18 4EP Staines-upon-Thames TW18 4EP (GB)