To ease the problems of both the Dutch Army Aviation Group (LVA) and the MLD, in August 1917 the Ministry of War encouraged companies like the car makers Spyker to become involved in aircraft production.

The floats, with rounded noses, three steps and vertical stern posts were made of aluminium alloy since wood degraded rapidly in tropical waters.

The 270 kW (360 hp) Rolls-Royce Eagle VIII water-cooled V-12 engine was installed in the nose with its upper cylinders exposed and a long external exhaust down the fuselage starboard side.

The fuselage remained deep and high sided back to the tail, possibly offering some directional stability in the absence of a fixed fin.

[2] The aviation department of Van Berkel Patent was closed in June 1921[1] and the proposed civilian version of the W-B, the W-F was never built.