British tanker Adula bound for England according to a letter of the German naval attaché at Istanbul dated 12 January 1940

In his letter dated Istanbul, 12 January 1940 No. 632g. 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 or chartered by the enemy. An item mentioned on 7 January 1940 the British tanker Adula loaded with 4,450 diesel oil and 6,240 ton masur bound or London and Manchester, England.

Source

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