FOKKER B.IV 1928 In 1928, the B.IV was developed as a six-seat luxury flying boat for the American market. The aircraft had a riveted, light-alloy hull (an interesting new construction) and an orthodox wooden wing. The cabin was available in various luxurious configurations. The 525-hp Pratt & Whitney "Hornet" with a thrust propeller was mounted on pylons on the wing. In America, the B.IV was designated F-11. Only one flying boat was built; the rest were delivered in an amphibious version, the B.IVA or F-11A. Around twenty hulls were built at the time at Papaverweg, but not all were completed. A hull section is on display at the Technical University in Delft as an example of riveted joints from that period. In America, General Aviation Corp. built several amphibious flying boats, which were equipped with both two thrust propellers and one with tension propeller. This was the GA-15 series, several of which were delivered to the US Coast Guard, as the PJ-1 with "Wasp" engines and thrust propellers and as the PJ-2 with "Hornets" and tension propellers. These aircraft were used for a considerable time as Flying Life Boats (FLB).

Cn 901 F.11 with registration 7887.

Cn 901 F.11, registration 7887, was equipped with tackles to get out of the water. Without landing gear, this was a disadvantage of flying boats: having to constantly lift them out of the water.

Cn 901 Anthony Fokker in work overalls, sitting in the door of F.11 7887.

Cn 901 Anthony Fokker gives instructions to dock the F.11 registered as X 148.

Construction of the aluminum F.11 fuselages at the Fokker factory on Papaverweg in Amsterdam-Noord.

The underside of the F.11 fuselage was built upside down.

Front view of an aluminum F.11 fuselage in Amsterdam.

Here are some F.11 fuselages in the assembly hall at Atlantic.

CN 901 The 7887, converted to the F.11A as an amphibian with retractable landing gear. Fokker in the door; the man in the hat is Albert Gassner, the designer of the F.11(A).

The 7887 F.11A of the American millionaire Harold Vanderbilt.

The luxurious interior of Vanderbilt's 7887.

CN 902 The F.11A NC-148H with a pull propeller instead of the pusher version. With this simple retractable landing gear, the wing floats still provide stability on the water.

Cn 902 De F.11A X-148-H.

Cn 902 Here is an experimental setup of two engines with both a pusher and a pull propeller on the F.11A X-148-H. The “X” in the registration indicates that this is an experimental phase of the F.11A.

CN 904 The F.11A with registration NC127M. The aircraft has a partial "Westeren Express" livery, but never flew for that purpose.

Cn 906 Canadian F.11A CF-AUV.

Cn 906 The fuselage of the Canadian CF-AUV came to the Netherlands at the end of 1992 and was exhibited at the time by its proud owner, the then Aviodome.

Front view of the F.11A, clearly showing the sponsons between the fuselage and the landing gear. When the landing gear is retracted, the sponsons move to a horizontal position, providing the fuselage with stability on the water.

The middle drawing of the F-11A clearly shows the position of the sponsons.