350 tons equals about 20 40ft containers at 18 tons cargo per container (usable capacity of ~67 m³) or 14 at 25 tons per container (maximum freight weight for a

350 tons equals about 20 40ft containers at 18 tons cargo per container (usable capacity of ~67 m³) or 14 at 25 tons per container (maximum freight weight for a standard 40ft container) or 12 at 30 ton per container (maximum freight weight for 40ft reefer (cooling) containers). The average capacity for container ships traversing the oceans is around 5000 20ft containers (TEU) or 2500 40ft containers. That equates anything between 125 and 200 of these sailing ships for each average container ship. Most modern container ships are far larger at 12000 TEU capacity or more. While this looks like an interesting approach for the types of cargo which caters to people who are willing to pay a premium for having their product transported by sail power - this coffee/chocolate/... was made with single-origin beans/... harvested by ... and shipped on a modern clipper - it is not a feasible solution for normal container shipping. Other types of wind-powered propulsion exist which can be used to reduce the fuel consumption for cargo ships which probably are more efficient in reducing shipping emissions than having large fleets of these 'freight yachts' traverse the seas.