High Quality Content by WIKIPEDIA articles! HMS L54 was a British L class submarine built by William Denny, Dumbarton but was later transferred to HM Dockyard, Chatham, for completion. She was laid down on 14 June 1917 and was commissioned on an unknown date. HMS L54 was sold on 2 February 1939 at Pembroke Dock. The British L class submarine were originally planned under the emergency war programme as an improved version of the British E class submarine. The scale of change allowed the L class to become a separate class.

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