The analysis of the Marco Polo data to derive the dynamic behavior of TLP’s in operational and survival conditions and to verify design methods and numerical analysis, is the objective of a Joint Industry Project. In this JIP the partners in Marco Polo will co-operate with other operators interested in the optimization of deep water operations and the extension to ultra deep water which requires focus on calibration with in service observed behavior. The main tasks in the project are the monitoring campaign, the data analysis and the verification of design methods.