Addison Win Wyre Special Recognition Award

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Addison were the proud recipients of the Special Recognition Award at the Wyre Business Awards ceremony at the Marine Hall recently. The award was given in recognition for the work Addison has undertaken for our QEC Portsmouth Project.

Volker Stevin appointed Addison Project to support them on this prestigious project based at HMNB Portsmouth which involves the expansion of the existing port to house the new aircraft carriers, the HMS Queen Elizabeth and the HMS Prince of Wales. These happen to be the largest vessels ever to be built for the Royal Navy. They are 65,000 tonne vessels, 280m long and 40m wide which can carry both fixed wing fighters and helicopters. In total 3 million cubic metres of clay, sand and gravel were removed from the harbour – covering the size of over 200 football pitches!


Addison supported Volker Stevin on the M&E package associated with the port expansion. Along with the reconstruction of the existing jetty and berthing facilities, the port required a dedicated high voltage electrical supply which is where Addison assisted.

Led by Addison’s Roy Austin, who was acting as M&E Design coordinator, HV engineers completed the HV Design, fault calculations and load studies required. The substation is now complete which supports a 13MVA 11kV 60Hz generator. This generator feeds an 11kV switchboard which in turn feeds a high voltage cable boom that connects to HMS Queen Elizabeth and enables the aircraft carrier to switch off the engines and be fed electricity from the national grid. The cable boom itself is both the largest and the first fully automatic cable boom in the world.

The whole system is controlled from a remote control room by a dedicated SCADA scheme which means that the entire operation is automatic once the connection to the ship is made.

We are truly delighted to have succeeded in winning the Special Recognition Award from the Wyre Business Award panel for this particular project. We are excited about the next phase of this project where we will begin the design and construction for the shore supply to the HMS Prince of Wales.

"I’d just like to let you know how impressed I’ve been with the way your engineers have worked together with us on this project." High Performance Plastics Producer