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Dynamic positioning of marine vessels

  • US 20070233389A1
  • Filed: 02/26/2007
  • Published: 10/04/2007
  • Est. Priority Date: 03/01/2006
  • Status: Active Grant
First Claim
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1. A method of determining the position of a vessel on the surface of water relative to a reference point below the surface to which the vessel is connected by a riser, the method comprising:

  • making measurements of the velocity of the vessel;

    making measurements of the angle of the riser adjacent to the reference point; and

    combining the velocity measurements and the riser angle measurements to derive an estimate of the position of the vessel.

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