The new fourth Astute-class nuclear-powered submarine, HMS Audacious, outside its indoor ship building complex at BAE Systems, Burrow-in-Furness. (Photo by Owen Humphreys/PA Images via Getty Images)
The new fourth Astute-class nuclear-powered submarine, HMS Audacious, outside its indoor ship building complex at BAE Systems, Burrow-in-Furness. (Photo by Owen Humphreys/PA Images via Getty Images)