German submarine SM U 39 sunk the British steamship Ypres according to the Kriegsnachrichten of the Chef des Admiralstabes der Marine dated Berlin 23 August 1917

SM 32-39©Warshipsresearch.blogspot.com

An item reported that according to the Spanish newspaper Vanguardia was the small anonymous steamship sunk with gunfire by the German submarine SM U 39 was the British steamship Ypres of 308 ton.

Source

Bundesarchiv RM-40-622