No, it’s not an aircraft, it’s a device for harnessing electricity from tidal streams. The DeltaStream device was designed by Pembrokeshire engineer Richard Ayre. Tidal Energy Limited have contracted Mustang Marine, in the Port of Pembroke, to build the device ready for testing in Ramsey Sound for a period of 12 months which is planned to commence in summer 2014. The Port of Pembroke will be the key operational hub for the testing. If the new technology is successful it could bring a substantial boost to the Welsh economy.