Installation of offshore platforms in carbonate soils is challenging, asevidenced by numerous incidents and accidents. The installation process ofmobile jack-up drilling rigs is no exception. The prevalence of these soils insome oil and gas producing regions, such as offshore Australia, necessitatesthorough understanding of the foundation behaviour as well as predictionmethods capable of capturing the salient features. This contribution thereforedevelops a method to predict footing penetration in uncemented carbonate sand.The method directly correlates the cone penetrometer tip resistance with thefooting load-penetration, i.e. without the requirement of selection of afriction angle. The development is based on centrifuge model experiments aswell as large deformation finite element analyses incorporating an advancedconstitutive model for the soil. The direct use of in situ site investigationdata increases the confidence in load-penetration predictions for rig moves inthese challenging soil conditions, while at the same time reducing the timerequired to obtain a prediction.