During her second voyage she damaged her rudder when she grounded in Delagoa Bay necessitating repairs at Prince Edward Dock, Durban.
On completion of that voyage she was requisitioned for use as an Armed Merchant Cruiser being fitted with eight 6 inch guns together with AA and machine guns.
With a black hull and buff upper works and funnel she was commissioned in the November and based at Freetown in Sierra Leone.
In 1942 she was replaced by one of the new light cruisers and sold to the Admiralty for conversion into an aircraft carrier. With fifteen aircraft and equipped with one catapult she was commissioned on 18th March 1943 but was used purely for training purposes. The conversion took place at Swan Hunters on the Tyne.
PRETORIA CASTLE (1) / WARWICK CASTLE (4) was built in 1938 by Harland & Wolff at Belfast with a tonnage of 17383grt, a length of 594ft 7in, a beam of 76ft 4in and a service speed of 18.5 knots.
Sister of the Durban Castle she commenced her maiden voyage as the Pretoria Castle on the 20th April 1939.