French company Airseas has installed its first half-size automated Seawing kite to a cargo ship chartered by Airbus, and will commence six months of trials in January. The full-size kite is estimated to save up to 20 percent of fuel burn and emissions.
Brief video:
https://www.youtube.com/watch?v=merU8IOgX4Y&t=81
Really cool… if it works reliably.