C-Job unveils autonomous underwater dredger

C-Job Naval Architects recently unveiled a new design of autonomous underwater vehicle (AUV) for use in maintenance dredging.

The 80-metre AUV, which is specifically created for use in port environments, will be equipped with a 16MWh battery pack that will provide enough power for up to 12 hours of maintenance dredging.

Rolph Hijdra, Autonomous Vessels Research Lead at C-Job, says the AUV will require 55 per cent less propulsion power compared to a conventional trailing suction hopper dredger (TSHD).

Mr Hijdra adds that, since the vessel is a submersible and thus more capable of mitigating wave motions, suction head power demand could be reduced by as much as 80 per cent.

The dredger will only need to surface for repair, maintenance, and charging of the batteries.