British cargo ship Elizabeth Masse visited the Black Sea according to a letter of the German naval attaché at Istanbul dated3 February 1940

In his letter dated Istanbul, Turkey 3 February 1940 No. 712 g. reported the German naval attaché to the Oberkommando der Wehrmacht Abteilung Ausland the neutral ships passing Istanbul coming out of the Black Sea and loaded with contraband for or chartered by the enemy. An item reported the British cargo ship Elizabeth Massey op 1 February with 6,640 ton wheat underway from Varna, Bulgaria towards Liverpool, England. On the stern 1 gun and apparently 1 flak.

Source

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