Norwegian cargo ship Vav visited the Black Sea according to a letter of the German naval attaché at Istanbul dated 17 February 1940

In his letter dated Istanbul, Turkey 17 February 1940 No. 801 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 reportedon 25 February the Norwegian ship Vav loaded with 9,365 ton petrol underway from Constanta, Romania towards Gibraltar for orders. One tiding dated 26 February reported her going to Alexandria, Egypt. The cargo was for England but her crew seemed to refuse to sail to England what the reason was going to Alexandria.

Source

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