A map of the Atlantic Ocean between South America and Africa.

Johannes van Keulen was a successful chartmaker based in Amsterdam; after his death, his business was continued by his son Gerard and grandson Johannes II. Gerard and Johannes II acquired some charts from Johannes Loots at the beginning of the eighteenth century, of which this may be one. There are an unusual amount of inland details for a sea chart. The map carries a dedication to Abraham Anias, cartographer to the Dutch East Indies Company and stepson of Jacob Roggeveen, another well-known cartographer.