Ruwais Sulphur Expansion Phase III in Abu Dhabi is part of a multi-billion dollars investment in Ruwais Industrial Complex. To meet the increased sulphur export demand the existing loading facility was expanded. The marine facilities consist of a quadrant beam and a pivot foundation for the ship loader, four mooring and four breasting dolphins. All structural elements are founded on raking steel piles rock socketed into the weak mudstone/siltstone bedrock. The paper describes the design of the piles (Ø762, 914 and 1067 mm) and in particular the pile load test set-up and the inferences from the load testing. It is concluded that the rock socket capacity is well over predictions by current design methods and it is demonstrated that the recommended tension pull out capacity referring to ground anchor design is extremely conservative.