British merchant steamship Incemore visited Black Sea according to a letter of the German naval attaché at Istanbul dated 12 January 1940

In his letter dated Istanbul, Turkey 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 the British merchant steamship Incemore armed with 1 gun at the stern manned by naval gunners. Funnel, both masts and hull dark grey painted, the bridge dark brown.

Source

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