The Mayflower Autonomous Ship (MAS), which had to abandon its transatlantic crossing in June 2021 due to a mechanical fault, has set sail again for an unmanned voyage from the UK to US.

The vessel had to return to Plymouth three days into its voyage last year after losing full power.

Once brought back to dock, the problem was found to have been caused by a fracture in the flexible metal coupling between the ship’s generator and exhaust system.