Comments from the Russian submarine U-475, Woolwich, London
A little peep behind the Iron Curtain - HJ Jolly, Holland
Loads of complicated pipes - Abbi Taylor, UK
Having lived through the Cold War, expecting to die in a Third World War by the end of the century, I never thought I'd be in a Russian sub - illegible, UK
I would not like to be on this submarine because there are only two toilets - Arun George, India
Dive! Dive! Dive! - Rod Steen, UK
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