Finland's Wartsila has completed another trial of its autonomous docking system that involved a ferry sailing between three Norwegian ports with no crew intervention.

Calling the operation "unprecedented", it said the system was used uninterrupted for the entire route, visiting all three ports serviced by Norled's 1,200-gt ferry Folgefonn (built 1998), which has hybrid propulsion and is already fitted with a Wartsila wireless charging kit.