A scene like a painting in the port of Priok. Photo from: Leiden University Libraries

Nice seaplane action. According to the caption provided by the source, the occasion was a fleet review off Batavia on 1 September 1932, although this caption belongs to another photo. Photo from: Leiden Photo University Libraries

The Van Berkel W-A, a licence-built Hansa-Brandenburg W.12 seaplane, was an important type in the Dutch Naval Air Service, serving both in Holland and in the East Indies. W3, in the background, is listed as written off in mid-1924. Photo from: Leiden University Libraries

The Rumpler 6B-2 was a single-seat floatplane fighter derived from the two-seat Rumpler C.IV landplane. The earlier 6B-1 was based on the Rumpler C.I. This example, German navy serial 1040, was interned by the neutral Dutch near Westkapelle, Zeeland on 29 May 1917. They liked it enough to ship it to the Netherlands East Indies in 1918, and it made its first flight here in April 1919. A second seat was later installed but it crashed during a test flight in October 1919. It is seen wearing early Dutch 'orange meatball' insignia. Photo from: Nederlands Instituut voor Militaire Historie

G-ADUY sank after hitting a submerged object while landing at Batavia (Jakarta). It was shipped back to the UK but was found uneconomical to repair. Scrapped. Photo from: Hudson Fysh Collection/State Library of New South Wales