Hungarian steamship Tisza inspected by British navy according to a letter of the German naval attaché at Istanbul dated 22 December 1939

In his letter dated Istanbul,  22 December 1939 No. 575g reported the German naval attaché to the Oberkommando der Wehrmacht Abteilung Auslandt lately British warships stopped off the island Tenedos the Hungarian steamship Tisza and brought her to Malta to check her cargo.

Source

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