Could cargo or auxiliary ships have been subsidized for easy escort-carrier conversion?
Short answerYes; the Royal Navy considered such conversions, although wartime demand for the same hulls could redirect them to other roles.
NotesPre-war thinking did include carrier conversion from suitable commercial or auxiliary vessels. Admiral Henderson's plans considered Royal Navy oilers as possible escort-carrier hulls during the 1930s. The idea therefore preceded the wartime emergency and was more than a retrospective possibility. Actual war created competing demands for the same large auxiliaries. Some were needed for amphibious shipping in operations such as Madagascar, so identifying a convertible hull did not automatically create an escort-carrier programme.