Fine Sea Chart of Puerto Rico and Hispaniola, published by Johannes Van Keulen II.
The chart includes inset maps of Santa Domingo and 3 other enlarged sections of Hispaniola, plus a section that includes I. De Vache.
An exceptionally detailed sea chart, focusing in on the part of the Caribbean where the Dutch, French, British, and Spanish had significant mercantile interests. The chart notes not only information at Sea, it also includes a fine topographical accounting of the major islands.
The chart credits the earlier chart of Mons. Frezier, published by Guilaume Delisle in Paris (1725). Amédée François Frézier was an Ingénieur ordinaire du Roy for Hispaniola.
Van Keulen has updated Frezier's map with additional hydrographical information provided by Captain Hendrik Lijnslager, a Dutch naval officer, to whom the chart is dedicated. Lijnslager was tasked with investigating sailing routes between Europe and the Caribbean, eventually recommending a westerly route that was popular with English seaman. In making these expeditions, Lijnslager utilized a manuscript version of the Frezier-Van Keulen chart, providing it high marks after the completion of his work.
Lijnslager, who is listed on the chart as a captain, became a Rear Admiral in 1748, which suggests the chart was prepared approximately between 1741, when he returned to the Netherlands, and 1748.