The display is informative. Having been aboard HMS Vanguard, one of Britain's Trident submarines, the comparison was interesting, mainly for the similarities. Both boats looked cramped, old-fashioned yet hi-tech for their day. One big difference was that this was an entirely Soviet product, whereas the whole missile section of the Vanguard is controlled from America. The result was that the crew were not authorised to give me permission to photograph there, even though there were only blank missile-tube walls to be seen. Of course, the chances of getting aboard a Russian submarine on active service, even without a camera, would be nil.