VoyOpt provides a 24/7 automated Voyage Optimization and Weather Routing service. It will guide ships from one port to another, in the most optimal way according to the end-user’s desired objectives. It provides optimized routes in an everchanging dynamic ocean environment for maritime traffic. Our system calculates the Voyage Optimization based on its input of metocean conditions obtained from an extensive catalogue of inputs from Earth Observations (EO) data, in-situ observations, weather forecast models and ML/AI. Our proprietary ship performance models allow to optimize for (any or a combination of) minimum fuel consumption, lowest emissions, best Estimated Time of Arrival (ETA), safest voyage, least ship structural stress, and so forth. The VoyOpt core technology of the Voyage Optimization and Weather Routing service is built upon five major components: Data Merging System (DMS), Ship Performance Models (SPM), Sailing Constraints, Optimization System, and VoyOpt user friendly Graphical User Interface.