HMS Rodney 16in gun turrets during World War II. Note the 20 mm AA guns installed atop Turret B.
A fine view of the sheer scale and complexity of the big gun turret for a Battleship. In this case, this appears to be a British 15" gun mounting, of the type mounted on R class batlleships, "Queen Elizabeth" class and Renown and Repulse.
HMS Abercrombie was a Royal Navy Roberts class monitor of the Second World War. She was the second monitor to be named after General Sir Ralph Abercrombie.HMS Abercrombie was built by Vickers Armstrong, Tyne. She was laid down 26 April 1941, launched 31 March 1942 and completed 5 May 1943. She used a 15-inch gun turret originally built as a spare for HMS Furious.
Cutaway diagram of the USS Monitor. USS Monitor was innovative in several respects, including the first 360-degree rotating armored gun turret on an operational warship. All but 18 in of the hull was completely underwater and was protected by an armored "belt". Her keel was laid on 25 October 1861, and she was launched 118 days later.
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