University of Strathclyde develops new fuel-saving rudder

A new rudder system developed in Scotland is being hailed as a major breakthrough in fuel efficiency.

The GATERS system developed by the University of Strathclyde will be fitted to an existing vessel for trials and has been licenced to the world’s largest propulsion manufacturer, Wartsila.

The U-shaped rudder sits astride a ship’s propeller, acting like a nozzle and generating additional thrust.

Both rudders can be steered independently and can help a vessel manoeuvre better in close quarters and when “crabbing”.

Early trials suggest the system can give a 15% fuel saving in calm waters and as much as 30% in rough seas.

The gate rudder is also quieter than traditional rudders, offers protection to the propeller and reduces hull wake.