British tanker Standella bound for England according to a letter of the German naval attaché at Istanbul dated 16 December 1939

In his letter dated Istanbul,  16 December 1939 No. 547g reported the German naval attaché to the Oberkommando der Wehrmacht Abteilung Ausland the ships passing Istanbul coming out of the Black Sea and loaded with contraband for the enemy. An item reported the passing on 14 December by the British tanker Standella coming from Romania with a cargo of 8,900 ton petrol for Coryton (new petrol harbour at the Thames estuary) England. The documents claimed for orders Gibraltar. Armed with 1 bow and 1 stern gun manned by the Royal Navy.

Source

Bundesarchiv. German Marineattaché for , Greece, Romania and Bulgaria 1939-1941. RM 12-II/459.