Built for the Ministry of War Transport, she was taken over by the Admiralty and completed as a Landing Ship Gantry.

[4] In November 1942, the British and Americans landed in French North Africa in Operation Torch, with Derwentdale taking part in the landings at Arzew near Oran in Algeria on 9 November.

Re-engined with engines from the Denbydale in February 1946, she returned to service as a tanker, her extra accommodation was used for passengers whilst freighting oil on the Trinidad to UK run.

Sold in December 1959 to Kent Line Canada and renamed Irvingdale 1, on 23 July 1966 she was moved to El Ferrol, Spain, to be broken up.

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