1753 VAN KEULEN, J. - Pas-Kaat vaneen gedeelte van de Aethiopische Zee behelsende de Kusten Zanguebar, Ajan en Abex, en een gedeelte van de Arabische Kust. . .

A finely engraved and detailed chart of the most eastern tip of Africa, including Somalia, Djibouti, Yemen, Mauritius, and many other islands in the Indian Ocean.

Very rare: only included in 6th volume (so-called secret atlas) of Van Keulen's.

Latitude scale, compass rose and system of rhumb lines, soundings, anchorage's, etc. Many Dutch names and a wealth of cities and information appear in the chart. The trading posts of the different nations are marked with flags. Number 47. in lower left corner, joined with sheet 46.

COLLECTOR'S ITEM.

More about Van Keulen dynasty [+]

Johannes Van Keulen

The van Keulen family operated a chart-making and publishing firm in Amsterdam for nearly 200 years. It was founded by Johannes van Keulen who registered his business as a "bookseller and cross-staff maker". Under his management, the Nieuwe Lichtende Zee-Faakel (New Shining Sea Torch) was begun in 1681. It was expanded to five volumes, and then finally to six volumes, with the addition of material from the secret files of the East India Company.
In 1693 van Keulen acquired the stock of Hendrik Doncker. In 1678, Johannes registered with the Amsterdam Booksellers Guild as a "bookseller and Cross-staff maker" By this time, most of the Amsterdam chart makers and instrument makers, like Blaeu, Janssonius, Hondius, Goos, and Doncker, had either closed down or were at the end of their fame. As a result, Johannes van Keulen could obtain copperplates, privileges, and stocks from many of his former competitors. Besides manuals and cross-staffs, Johannes produced his famed "ZeeAtlas" (Sea Atlas, 5 volumes), and "ZeeFakkel" (Sea pilot book, 5 volumes). ZeeFakkel was produced in numerous languages, including English, French, Italian, and Spanish. Gerard van Keulen, son of Johannes, born in 1678, took over from his father in 1714 and continued to expand the flourishing firm. Gerard’s accomplishments include hundreds of manuscript charts, now held in several European collections.

In 1726, Johannes van Keulen, son of Gerard, took over the business.

In 1743, Johannes was appointed "Official Chartmaker of the Dutch East Indies Company". The title appears to be nothing more than a formality, however, since the firm had supplied charts to the East Indies Company for many years, and the van Keulen family of Amsterdam had an interest in the East Indies Company. Still, van Keulen Chartmakers held the official title until the East Indies Company was dissolved in 1799. In 1753, Johannes finished his grandfather's work by publishing the sixth volume of "ZeeFakkel". This volume contained the previously kept 'secret' cartography of the East India Archipelago collected and used by the V.O.C. (THE DUTCH EAST INDIA COMPANY). Jan de Marre, the examiner of the Amsterdam Chamber of the East India Company, provided van Keulen with the data for the ZeeFakkel sixth volume, and it is also believed that de Marre influenced the van Keulen chart makers' decision to start producing the newly invented Hadley’s Octants in 1744. The company distributed these maps only internally and never sold them. Merchants had to return the maps after each journey to keep trade routes secret. Until van Keulen II printed the Atlas in 1753, the Dutch East India Company used costly manuscript versions prone to errors. Johannes II was appointed official mapmaker of the Dutch East India Company in 1743, a title his family held until the company's dissolution in 1799. Following the death of Johannes van Keulen (1770), the company was run by his widow and their two sons, Cornellis Buys and Gerard Hulst van Keulen. By then, they also owned an anchor factory, which they managed separately. In 1778, after brother Cornellis's death, Gerard Hulst van Keulen assumed leadership of the chart-making firm, adding sextants to their inventory for sale. Gerard was one of the three original members of the "Dutch Commission for Longitude at Sea", installed by the Dutch Admiralty in 1787. In 1788, Gerard van Keulen published the first "Dutch Nautical Almanac", an annual publication that continued until 1885. When Gerard Hulst van Keulen died in 1801, his widow ran the firm until her death in 1810, when Johannes Hulst van Keulen became the last van Keulen to run it. In 1823, Jacob Swart entered the service of the van Keulen firm, and in 1844, with the death of Johannes Hulst van Keulen, head of the van Keulen Chartmakers was passed to Jacob Swart. When Jacob died in 1866, he was succeeded by his son, Jacob Swart, Jr.

Under Jacob, Jr’s reign, the firm lost all of its standing in the Nautical world, and the possessions of the firm were sold at auction in 1885, bringing 200 years of "DeGekroonde Lootsman" to an end.