A high-performance foiling catamaran can, under the right conditions, make progress against a 10-knot current by using the apparent wind generated by the curren

A high-performance foiling catamaran can, under the right conditions, make progress against a 10-knot current by using the apparent wind generated by the current itself. As the current moves past the stationary water, it creates a relative wind of 10 knots that the catamaran’s sails can harness. By angling its sails and using its foils to minimize drag, the boat can generate thrust and lift, potentially achieving a speed over water faster than the current. This allows it to tack or gybe efficiently, making indirect progress upstream.