You may need official details of the wartime movements of GADILA. Her movement card can be downloaded from the National Archives website. Cost £3.50.
http://discovery.nationalarchives.gov.uk/details/r/D8658336
What an interesting thread.
I wondered why details of MV Gadila would be stored at the (British) National Archive, so I asked Mr Google's opinion.
Wikipedia says: "MV Gadila was built at the Howaldtswerke, Kiel, Germany and completed 11 April 1935 as an oil tanker for the Royal Dutch/Shell line. She was converted at Smith's Dock, North Shields between April 1943 and 1 February 1944. She entered service as a MAC ship in March 1944, and
operated under the Netherlands Mercantile Marine flag.[1]
As a MAC ship, she had no aircraft hangar, and continued to carry normal cargoes with a mercantile ship's crew,
although operating under British Royal Navy control. Only her air crew and the necessary maintenance staff were Naval personnel.[2] In the case of the Gadila, these were provided by the Royal Netherlands Navy and served as elements of Fleet Air Arm 860 (Dutch) Naval Air Squadron."
https://en.wikipedia.org/wiki/MV_GadilaThat explains the National Archive interest..... but I don't know if it helps you untangle the question at all?
Personally, I would be inclined to approach both British and Dutch Naval sources with your query.
