Shipping traffic heading to the west of Gibraltar on 1 August according to the Kriegsnachrichten of the Chef des Admiralstabes der Marine dated Berlin 6 August 1917

An item reported the sighting on 1 August heading to the west of 1 armed British passenger steamship, 1 armed French steamship, 1 armed steamship and 2 armed British steamships from Gibraltar.

Source

Bundesarchiv RM-40-622