A Semi-Submersible brown field project, consisting of the conversion of a large exploration vessel to a production vessel overran in time and in money. As expected in the conversion of a 25 year old structure that has spent its life at sea, many variations and changes were required that had not been foreseen after the initial survey. Weather, changes and general delays led to a significant dispute. Appointed as experts in quantum the role was to present an independent report to the Tribunal. Once the expert report was produced the claimant conceded sufficient elements of their claim that a settlement for a third of the initial claim was agreed.