Losses of merchant ships due to German and Austrian submarines according to the Dutch newspaper Nieuwsblad van het Noorden dated 31 July 1916

An item reported that since Germany on 18 February 1915 announced to start her unrestricted submarine warfare the German-Austrian submarines destroyed at least 1.000 ships belonging to her enemy (the Entente) and to neutral countries. The result was that the USA entered the war 6 April 1917 as opponents of Germany because of this submarine warfare.