Geophysical Survey Tender for ELWIND Offshore Wind Project Launched Supply Chain The final report for pre-FEED will consist of, among other things, a complete review of all site-specific data available, investigation of suitable technologies, conceptual design alternatives of both ELWIND offshore wind farm areas, conceptual design of the selected foundation option(s), cable laying types and technologies, as well as conceptual design of the electrical infrastructure offshore and onshore, up to the grid connection options as identified by AST and Elering .