The influence of Mooring Lines on the Damping of Low Frequency Motions of Moored Offshore Structures

For years it has been customary, in the prediction the Low Frequency (LF) dynamic behaviour of moored offshore structures, to assume that the mooring system only influences the restoring force characteristics. The contribution of the mooring system to the total system damping was neglected. Research and model tests in recent years have shown...

Dynamic analysis of Jack-ups

Jack-up offshore structures have a natural period which lies in the high frequency tail of the spectra of North Sea storm waves. This taxi has Significant energy and the jack-up may experience significant dynamic Data have become available from field measurements of the dynamic behaviour of the Maersk Guardian jack-up rig. These data have been...