Stationis is a collaborative project to develop a decision support software program dedicated to the pre-engineering design of the subsea architecture of a floating wind farm, led by EOLFI in collaboration with ABYSSCAD, CAPSIM, INNOSEA and the hydrodynamic research laboratory of Ecole Centrale de Nantes. Its intuitive 3D interface relies on an innovative approach, considering project constraints at the farm level, to define mooring and inter array electrical architectures, and compare them regarding technical performances, costs, operation and maintenance complexity and environmental impact indicators. The software will be completed and tested by Q1 2019.