Fokker B.IV / F.XI.A
The original version of the B.IVA, the B. IV, also known as F.XI.A pure flying boat, only one was built.
The B.IVA amphibian flying boat had the wheel axles housed in stabilising floats which balanced the aircraft on water. During flight the wheels were retracted into recesses at the ends of the floats to reduce drag.
Twenty metal fuselages were constructed in Amsterdam, the B.IVA wings being made America. The B.IVA was the first Fokker flying boat to achieve any success, only one example of each of its predecessors having been made.
A number of these aircraft were sold, to companies as well as to individuals.
The PJ-1 flying boat developed from the B.4A.
B.IV / F.XI
B.IVA / F.XIA