This document includes the final version of the V-Con approach and its Technical Challenges. It is intended to be used by future principals and contractors for the development and application of V-Con-like solutions. The original Technical Challenges were to be met by the Contractor for the pre-commercial V-Con Solution in Phase 3 of the V-Con project. In this final version the lessons from V-Con Phase 3 are incorporated. This final version of the Technical Specification is the refinement of the Technical Specification, Phase 3 (V-Con TS P3, 2016)