The sheets are part of a series of drawings of the expedition to the Sont, made aboard on his ‘Galjoot’ by Willem van de Velde the Elder, dealing with the course of events in October 1658. At this expedition two Dutch admirals would ultimately lose their life: Witte de With, on the ‘Brederode’, probably the ship on the right of the drawing, and, Pieter Florisz on the ‘Joshua’, seen on the right behind the ‘Brederode.’
The drawings were made on his famous drawing table with rolling technique. The artist was eye witness on a ‘Galjoot’ which was made available by the Admiralty with a skipper. In the drawing, the sails of the ships have been carefully observed and the sterns of the ships carefully delineated. In this drawing Willem van de Velde employed a comparatively low viewpoint which enabled him to show the multitude of sails, flags and pennants of the ships.