Model tests in scale 1:80 were carried out for BP on the verification of a new FPSO for installation in 395 m water depth west of Shetland (the Schiehallion field), representing an area with particularly strong wind-driven seas combined with strong currents and swell.
The hull characteristics, main topside details as well as individual mooring lines and risers were modelled (except from some riser details) in extreme weather conditions. The primary objectives of the tests were to verify the motion characteristics of the FPSO system, assess extreme wave interactions with the hull, calibrate the results of the analytical studies of the mooring, and calibrate the global mooring fatigue analytical model. In addition, focus was also addressed on assessment of riser loads, motions and interactions, and on loads and motions at heli-deck and topside modules.
