This was built around two spars and had three distinct sections, with a long rectangular centre-section which occupied just over half the span and was mounted, without dihedral, on top of the fuselage.

It was braced on each side by pairs of wires, upper ones running from the engine mounting to the spars at the end of the wing centre-section and below from the lower fuselage to the same points.

[2] There was one open crew position in the nose, wrapped round with a long, shallow window and fitted with a flexible gun mounting.

[2] It was an amphibian with retractable wheels on cranked axles with rearward drag struts hinged from the fuselage sides and with near-vertical shock absorber legs.

[3] A second prototype, flown two years later, powered by a 640 kW (860 hp) Hispano 12Ydrs V-12, differed from the first aircraft in having an open cockpit.

[3] In September 1933 the first prototype went into service with the French Naval Air Arm following fin modifications and the successful completion of its reception tests at the Saint Raphaël base.