Experimental low frequency mooring analysis of a floating offshore wind turbine

Previous research into floating offshore wind turbines consistently shows some manner of discrepancy between numerical and experimental simulations when it comes to low frequency forces and motions. A part of solving this issue is the generation of accurate data for the calibration and validation of the numerical models, needed because of the...

Open ports for container vessels: An exploratory study into the possibilities for offshore and exposed container ports

Traditionally, ports are located in areas protected by natural shelter. Shelter is needed for the safe mooring of vessels and for the efficient handling of containers and other cargo. Disadvantage of the areas which provide natural shelter is their limiting depth. Due to the increasingly bigger vessels, dredging in ports became inevitable....

Application of the random storm method to global structural loading on fixed offshore structures

In conventional practice extreme design conditions for offshore structures are obtained very conservatively by extrapolating 3-hourly statistics of wind, wave and current data to a (say) 100 year return level, assuming that the 100-year extremes occur simultaneously and act in the same direction. This study involves an alternative approach...

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...