There are projects out there to build or retrofit cargo ships with sails, have you looked at them, and what makes you different? e.g.https://www.dykstra-na.nl/

There are projects out there to build or retrofit cargo ships with sails, have you looked at them, and what makes you different? e.g.https://www.dykstra-na.nl/designs/wasp-ecoliner/ https://www.dykstra-na.nl/designs/wasp-ecoliner/