Looks similar to a Felixstowe Fury, however with four engines instead of 5. The Fury flew in 1918, therefore the British design could have possibly influenced this French "High Seas" hydro-aeroplane concept. The Curtiss Wanamaker Model T four engined aircraft of 1916 could have also been an influence. Maybe a Halbron design (the HT1 twin hull triplane was French and could be a lead).