The Caudron brothers used the designations H and M to distinguish hydravions (seaplanes) from monoplanes in their catalogue for distribution at the 1912 Paris Salon.
[4] The three crew were accommodated in a flat sided nacelle, mounted above the lower wing, with a semi-cowled, 52 kW (70 hp) Gnome Lambda 7-cylinder rotary engine in the nose and the pilot placed at about mid-chord.
The main, underwing floats had single mainwheels largely within them, set about two-thirds the way back and enclosed above by roughly semicircular covers.
[2] It was marked as a military machine, possibly intended for use in the French Colonies and was received by them on 14 February 1913 with serial CC5.
[2] The first example flew at an event hosted by the Boulogne Aero-Club on 14 July 1913, taking off from the beach, though on different, longer floats.