> But sails are too high maintenance to be scalable. I'm not sure how true this is, as a number of sail-assisted designs are already in use around the world, a

> But sails are too high maintenance to be scalable. I'm not sure how true this is, as a number of sail-assisted designs are already in use around the world, and have been for at least a decade. There are even several insurance classifications for large-scale cargo ships that incorporate the various possible sail-assisted architectures.