Nederlandse Modelbouw en Luchtvaartsite

Dutch Modelling and Aviation

In Memoriam

Klaas Willem Jonker
† April 30, 2018

On Monday 30 April 2018, Wilko Jonker died after a long illness at the age of 58. He leaves behind a wife and two children. The Dutch military aviation and plastic modeling were his hobby and on this website he shared all the knowledge he has collected over the years. His hobby has been able to distract him from the persistent disease in his body until the last week of his life. The contacts with other hobbyists were a major support for him.

This website will be maintained by different people for as long as possible, so that other enthusiasts can continue to benefit from extensive content.

Fokker C.XIw


The Fokker C.XI was developed by Fokker based upon specifications of the Dutch navy for Sea Scouts in 1935.
The aircraft was built in traditional Fokker-way, with a linen-covered, welded steel tube fuselage and wooden wings. The wings of unequal span were positioned diagonally above the other.
The aircraft was suited to be launched from cruisers with a (steam) catapult [Hr MS De Ruijter was fitted with a Heinkel steam catapult]. Before that time had to be put aboard aircraft on board with a crane, a time-consuming process.

The prototype made on July 20, 1935 the first flight was followed by extensive tests with the slingshot. These were successfully completed, followed by an order for thirteen production aircraft.


Technical information
Length: 10,45 m Wingspan: 13 m
Height: 4,5 m Wing area: 40 m2
Empty weight: 1720 kg Max. start weight: 2550 kg
Max. speed: 280 km/hr Climbing speed: - m/min
Cruising speed: 235 km/hr    
Range: 729 km Service ceiling: 6400 m
Engine type: One Bristol Pegasus XXX rated 750 hp
Crew: Two men: one aviator plus one observer
Armament: Two 7,9 mm machine guns