British cargo ship Starlin visited Porto, Portugal in June 1941

In his letter No. 855 dated Lisbon 8 July 1941 reported the German naval attaché in Portugal to the Oberkommando der Kriegsmarine at Berlin the marine traffic at Oporto between 29 June-5 July 1941. British cargo ship Starling, arrived on 21 June coming from England, departed on 30 June towards England. Article 34153. Gross tonnage 1,3200 tons. Cargo consisted of coal all unloaded. Loaded general cargo. Armed with 1 gun on the stern.

Source

Bundesarchive. RM 11-17. German naval attaché in Portugal.