Construction of new accommodation for submariners at HM Naval Base Clyde has reached a milestone with the placement of the final parapet and prefabricated concrete panel on the fourth of four new blocks, the Royal Navy has said. The panels, weighing between 10 and 18 tonnes and spanning three to five metres wide, have been used to build the four blocks, two of which are designed specifically for submariner trainees, under a £166 million project …