The features include the ability to maintain the independent twin rudder synchronisation within 0.6º, providing a wheelhouse operated toe in/toe out facility for the rudders, adjustable "soft" operation of the hydraulic system and three steering positions with full control handover and indication between the stations.

The system also features full follow up wheel units with differing wheel turns, braking and locking facilities. The turning speed of the steering wheels also determines the speed of rudder movement.

The system has total interface with the autopilot control, plus a fault alarm interface with the yacht's monitoring system.

The contract called for supply of the rudder carriers, rudder stock connectors and two pairs of hydraulic actuators.

The power packs - one of which is shown here - are fitted with power on demand, axial piston, hydraulic pumps and programmable, proportional solenoid valves. The two power packs are, says Wills-Ridley, automatically controlled such that if one for any reason fails then the other will immediately take over. Backup steering consists of non-follow-up joy sticks and manual helm pumps.