Rijksmuseum Amsterdam, Netherlands. Original link
The Dutch minister of navy ordered in his letter dated 15 April 1818 that the armament of the brigs consisted of 18-30pd carronades with a crew numbering 100 men. Rigging in British manner. (1)
Note
1. The Zwaluw, Kemphaan, Valk, Echo, Pegasus, Merkuur and Venus.
Source
Archive Dutch navy yard at Vlissingen, Netherlands (Zeeuws Archief, Middelburg) 95.16.