(19)

(11)

EP 3 898 401 A1

(12)

(43) Date of publication: 27.10.2021 Bulletin 2021/43 (21) Application number: 19842608.2 (22) Date of filing: 23.12.2019

(51) International Patent Classification (IPC):  B63B 22/24(2006.01) B63H 25/42(2006.01) B63B 27/34(2006.01) B63B 27/24(2006.01) (52) Cooperative Patent Classification (CPC): F17C 2201/052; F17C 2270/0113; B63B 22/24; B63B 27/24; B63B 22/021; B63H 25/42; B63B 27/34; F17C 2265/061; F17C 2270/0105; F17C 2270/0126; F17C 2221/035; F17C 2221/033; F17C 2223/0161; F17C 2205/0364; F17C 9/00; F17C 2225/0161; F17C 2223/0153; F17C 2225/033; F17C 2223/033; F17C 2225/0153 (86) International application number: PCT/GB2019/053684 (87) International publication number: WO 2020/128530 (25.06.2020 Gazette 2020/26)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 21.12.2018 GB 201820998 (71) Applicant: Future Marine Services Limited Diss IP21 4HD (GB)	(72) Inventor: GILCHRIST, Robert Eye IP23 7JA (GB) (74) Representative: Dummett Copp LLP  25 The Square Martlesham Heath Ipswich IP5 3SL Ipswich IP5 3SL (GB)