A ship powered by renewable energy, including hydrogen produced onboard, is docked in Florida as it prepares to finish the last leg of a voyage around the world. The 100-foot catamaran, dubbed the Energy Observer, has logged 63,040 nautical miles without using fossil fuels since it first started sailing in 2017. This particular trip around the world started in 2020.The mission has tested renewable energy - including by using solar panels and advanced sails - as a power source in multiple climates off the coasts of Africa, Asia and Antarctica. The automated 12-metre wings boost the ship's speed and reduce energy consumption. The project hopes to influence the shipping and maritime sectors, especially as its oceanwings have been used in commercial shipping.