Can anyone identify this warship? Where and when was she built? Where was the photograph taken? And when? And what was she doing in these locks? Was she on her way to a theatre of war?

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Send your answers via email to sm.ed@kelsey.co.uk or by post to Mystery Ship, Ships Monthly, Kelsey Publishing, Cudham Tithe Barn, Berrys Hill, Cudham, Kent TN16 3AG.