As a shipboard aircraft the Villier IV was required to have, in addition to the normal equipment of a two-seat military machine, folding wings and tow and hoist points.

Like most Villiers aircraft, the wingplans were strictly rectangular in plan apart from a shallow cut-out over the forward cockpit; the upper wings had three times the area of the lower.

A pair of upper wing hoisting points enabled the Villier IV to be lifted back on board its ship by a crane.

[1] The fuselage of the Type IV was built around six spruce longerons with stringers, formers and poplar plywood skinning but no internal cross-bracing producing a semi-monocoque structure.

These were mounted on an axle just forward of the wing leading edge, supported at its centre by a V-strut from the lower fuselage longerons and at its extremities by struts at about 45° to the same points.

Under the trailing edge a W-form strut linked the longerons and floats, allowing passage for bombs released from the central fuselage underside.

The world record was for speed over 100 km (62 mi) with a 500 kg (1,100 lb) load, set at 203.275 km/h (126.309 mph) on 13 May,[6] which was still standing a year later.