Oerlikon 30 mm twin cannon

The Oerlikon 30 mm twin cannon is an anti aircraft gun used by the Royal Navy. They were fitted to Type 42 destroyers after the Falklands War to improve defence against air attack.[1]

An Oerlikon 30 mm twin cannon on HMS Cardiff

References
  1. "Type 42". www.globalsecurity.org. Retrieved 2008-04-05.
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