Russian naval forces harassing Turkish merchant shipping and coastal line according to the Dutch newspaper Rotterdamsch nieuwsblad dated 6 July 1915

An item reported that a Russian submarine sunk 3 Turkish steamships in the Black Sea measuring respectively 2.500, 1.500 and 400 ton. Furthermore was an armed schooner in the Bosporus forced to run ashore. Russian torpedo boats in the meantime fired successfully at the Turkish city Zoengoeldak.