Several Allied warships active between Cannes and Villefrance according to the Kriegsnachrichten No. 60 of the Chef des Admiralstabes der Marine dated 28 June 1918

An item referring to a reliable agent reported that between 27-30 May between Cannes and Villefrance several warships were active: off Cannes 7 destroyers, off Villefrance 5 destroyers and 2 guard steamships before the harbour entrance.

Source

Bundesarchiv RM-40-622