Life & Career
Trevethan was promoted to the rank of Boatswain on 1 November, 1898.
Trevethan was promoted to the rank of Chief Boatswain on 1 November, 1913.
Appointed in command of Elf from 5 July, 1914 through 27 November, 1916.
Trevethan was placed on the Retired List at his own request at the rank of Lieutenant on 6 August, 1922.
William U. H. Parry-Okeden
|Captain of H.M. T.B. 050
7 Mar, 1912 – 31 Mar, 1914
Charles H. Thacker
- The Navy List. (March, 1913). p. 401a.
- The Navy List. (December, 1913). p. 402.