23rd Offshore Technology Conference, 6-9 May 1999, Houston, TX.
A test program has been carried out on a 1:50 scale model of a 150,000 tonne tension leg platform in a water depth of 350 m. The same model was tested under the same wave and wind loading conditions in two separate facilities. The first was a 200 m by 12 m tow tank having a water depth of 7 m (350 m full scale). The second facility was a 75 m by 32 m basin having water depth of 2 m (100 m full scale) with the additional 5 m (250 m full scale) accommodated using a pit. The paper compares results found in the tow tank and those found in the basin. Presentation is based on comparison of the tether tension and rigid body motion response of the TLP to a number of wave and wind spectra simultaneously applied to the model. These results are also compared to numerical predictions.