Ships
- HMS Emerald (D66) Acting Commander from 3 November 1942 · Relieved on 13 March 1943
- HMS Emerald (D66) Acting Commander from 28 September 1944 · Relieved on 5 October 1944
John Frederick Denman had Emerald twice, both times as an acting commander on the retired list. The first command ran from 3 November 1942 to 13 March 1943. The second ran from 28 September 1944 to 5 October 1944.
Uboat.net records that he was born on 2 August 1896. The page gives no place and no date of death.
The rank table lists midshipman on 1 April 1915, lieutenant on 15 February 1917, lieutenant-commander on the retired list on 15 February 1927, and acting commander on the retired list on 22 May 1940. He had retired on 5 December 1922. On 3 September 1945 the page promotes him commander on the retired list. It says it has no career narrative.
He took Emerald on 3 November 1942 from Richard Graham Stewart, while she was coming home to refit, and he turned her over to Francis James Wylie on 13 March 1943. She recommissioned on 7 April 1943 for the Eastern Fleet. He had her again for a week at the end of September 1944, between Wylie and Robin Lloyd, after she had been withdrawn from operational use and paid off at Rosyth. The pages do not describe any other wartime appointment.
The fetched pages record the September 1945 retired-list promotion and nothing after it.