Method and apparatus for handling mooring lines

Details Method and apparatus for handling mooring lines Method and apparatus for handling mooring lines

2008-01-08

2008-01-08

Olson, Lars A. (Department: 3617)

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Anchoring arrangement

C367S107000

Reexamination Certificate

active

11377540

ABSTRACT:
Apparatus and methods of monitoring mooring lines of an offshore drilling rig, with the apparatus including a communication system in communication with a global positioning system, providing position coordinates of the apparatus at a first point on the line, and also includes an inertial navigation system supported by the frame, providing position coordinates of the apparatus at a second point on the line, by double integration with respect to time of inertial accelerations measured by the device as it is moved from the first point to the second point. Correction at the second point is provided by obtaining at the second point, depth, position relative to magnetic north, and deviation from vertical.

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TH2798 PCT. PCT/US2006/009994. Written Report dated Jul. 14, 2006.

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