HMNB Portsmouth QEC Base Porting Infrastructure

dolphins, and a pre-fabricated access walkway at Victory Jetty’s southern end.

Our shore-power supply reduced energy consumption caused by ships burning generator fuel when berthed. We built a substation and installed 2.6 miles of cable to connect to the national grid. We also developed bespoke

Project successes

We brought the Princess Royal Jetty into service three months earlier than the client’s original programme. In August 2017, huge crowds lined Portsmouth Harbour to welcome HMS Queen Elizabeth for the first time, gaining nationwide media coverage. We went on to complete Victory Jetty two months early, and the two carriers were able to berth next to each for the first time in November 2019.

rotary frequency converters, to transform the typical 50Hz frequency to the 60Hz that ships operate on.

We designed and installed a bespoke telescopic cable boom to bridge the gap from the jetty to the vessel. This sends the 11,000-volt shore-power supply to the berthed carriers and tracks the ship to maintain connection during tidal movements.

Our sustainable construction efforts were recognised through the winning of the CEEQUAL ‘Very Good’ Whole Team Award. CEEQUAL is the world’s leading sustainability rating scheme for infrastructure, engineering and public realm projects. The Defence Infrastructure Organisation also presented us with a Sanctuary Award, which recognises outstanding sustainability across the defence estates.