(19)
(11) EP 2 239 191 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.12.2012 Bulletin 2012/52

(43) Date of publication A2:
13.10.2010 Bulletin 2010/41

(21) Application number: 10159468.7

(22) Date of filing: 09.04.2010
(51) International Patent Classification (IPC): 
B63B 35/44(2006.01)
(84) Designated Contracting States:
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 SE SI SK SM TR
Designated Extension States:
AL BA ME RS

(30) Priority: 09.04.2009 US 420903

(71) Applicant: J. Ray McDermott, S.A.
Houston Texas 77079-4411 (US)

(72) Inventors:
  • Ding, Yun
    Sugar Land, TX 77478 (US)
  • Soester, William. L
    Sugar Land, TX 77478 (US)
  • Chen, Cheng-Yo
    Houston, TX 77095 (US)

(74) Representative: Meldrum, David James 
D Young & Co LLP 120 Holborn
London EC1N 2DY
London EC1N 2DY (GB)

   


(54) Improved heave plate on floating offshore structure


(57) A floating offshore structure having a buoyant hull with an open truss frame having heave plates vertically spaced along the truss frame. One or more of the heave plates include a skirt plate that is attached around the outer perimeter of the heave plate and increases the effectiveness of the heave plate at trapping water mass between the heave plates for reducing heave motions of the floating offshore structure. A skirt plate is attached to one or more heave plates at substantially a right angle to the heave plate. The skirt plate may extend beyond the upper and lower surfaces of the heave plate or be positioned so as to be flush with the one surface of the heave plate and extend only beyond the opposite surface of the heave plate.







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Search report