Projects in maritime construction are huge and cost intensive endeavours: the terms of reference for these projects often cover literally thousands of pages. Prospex was called in by the main parties to address a main challenge: parties often end up in court quickly, as the reality on the ground is much more complex than the piles of papers. Working with the three parties – clients, providers and technical consultants – Prospex designed exchanges on how providers can be called in by clients and technical consultants from the beginning of the design process, finding encompassing deals early on in the process. This Early Contractor Involvement (ECI) creates sustainable deals between the parties, prevents later conflicts and supports finding optimal technical solutions. Prospex also supports parties in developing the mind-set and practical collaborative approach that is needed to make ECI a success.