The Van Speijk class frigates were equipped with Dutch electronics/sensors. The British Leander design was chosen to enable rapid construction to replace elderly escorts for ASW duties and NATO patrol. The ships were thoroughly modernised in the late 1970's. Between 1986-1990 all six were transferred to the Indonesian Navy.

The sturdy Fokker C.XIw was designed and built for service in the Royal Netherlands Navy. Development started in early 1934. The biplane scout was the first Dutch aircraft which could be catapult launched. At that time, a new flagship for the Netherlands East Indies Squadron was under construction and would receive a Heinkel K 8 catapult. Fifteen aircraft were ordered and served as long-range reconnaissance for the fleet from 1936 to 1942.

It was mainly operated in the Netherlands Indies and...