Sea Charts


Sea charts, whether printed or in manuscript form, often have a romantic appeal far stronger than that of land maps. The romance of the seaman's intrepid voyages through uncharted waters can often be sensed when examining a chart.

Before the development of printing, there was an active chart-making industry based around the Mediterranean in places like Genoa, Venice and Majorca. From such centers, manuscripts, 'rutters' and 'portolans' were produced for the Mediterranean and Southern European Atlantic coasts. Throughout the sixteenth century the manuscript portolan, in single sheet or atlas form was the only relatively accurate source of navigating information.
Lucas Jansszoon Waghenaer chart Spieghel der ZeevaerdtBy 1584 an experienced seaman and pilot, Lucas Jansszoon Waghenaer, had published his compilation of charts, "Spieghel der Zeevaerdt". During the first half of the seventeenth century, Amsterdam saw the production of many printed charts and chart books, most of which are now very rare. The Blaeu's, Gerritz, Barents, Colom, Lootsman, Doncker, van Loon, Robijn, Roggeveen, Goos, and de Wit are renowned for their output.

Another important firm of chart producers was the Van Keulen family, who published charts - both manuscript and printed - and atlases from about 1680 for over one hundred years. Their dominance in the Dutch trade was confirmed by appointment, in 1714, of Gerard van Keulen as hydrographer to the V.O.C.

Mortier chart
The 18th-century navigators relied on nautical charts produced by a handful of chart makers and instrument sellers who worked in Paris, Madrid and the City of London. These privately produced charts, or "bluebacks" as they were known from the tough blue manila paper on which they were mounted, were in circulation amongst the merchant fleets of the world until the Second World War.
If not blue-backed, charts were often printed on thick paper or thin paper laid on thick in order to prolong their working life.

Under Louis XIV French interest in the sciences incorporated a reappraisal of all cartographic techniques. It was here that the first central organization for chart provision was founded in 1720; the Dépôt Général de la Marine, followed by Denmark in 1784.
The Spanish established the Direccion de Hidrografica in 1800, and the American U.S. Coast Survey followed in 1811.

Dépôt Général de la Marine
Already in 1670 the first french hydrographic missions were made along French, Spanish and Italian coasts. The first publication was named "Neptune François', (French Atlas), and was published in 1693.
D'Après de Mannevillette (1707-1780) was a famous French sailor and hydrographer. During a voyage to China in 1728, he succeeded in correcting the latitudes of many places using new instruments. Back in France, he devised a plan to correct and publish all the existing maps of the route to China: the Red Sea, the coasts of India, Malaya, the northern parts of Indonesia, Indochina, and China.
When the first edition of his Atlas Le Neptune Oriental (containing only 22 charts) was published in 1745, it was regarded as a major achievement and a library indispensable to navigators. In 1672, d'Après was appointed director of an office established by the Compagnie des Indes to publish charts.
In 1676, on September 22nd, Colbert decided to organize, in place des Victoires, Paris, the first French cartographic Navy Archives. It was not before 1720 that the French Navy Council asked to de Luynes to collect all navy documents and organize the "Dépôt Général des Cartes et Plans".

The Hydrographic office
In 1795, George III appointed Alexander Dalrymple as the first Hydrographer to the Admiralty. Dalrymple was tasked with organizing the manufacture of new charts and the distribution of the Navy's existing stock of charts and pilots. The first charts were produced in 1800, and Dalrymple recommended setting up what would become the chart committee in 1800. Dalrymple's successors, Captain Thomas Hurd and William Parry continued plans to complete a world sea survey and by 1821 there were sufficient charts to warrant the first catalog of Admiralty charts.

In 1829, Sir Francis Beafort, who developed the Beaufort Scale of wind strength, took over the Hydrographic Office and initiated a period of prodigious activity: He sent surveyors all over the globe - William Fitzwilliam Owen to Africa, Robert Fitzroy to South America and Sir Edward Belcher to China.
By the end of Beaufort's tenure, in 1855, the hydrographic office had produced 1,437 charts in 113 surveys worldwide: an average of once a week.

Beaufort also introduced a standardized notation for charts, and most of the charts produced by the Hydrographic Office delineated coastline as well as high and low watermarks and depth of water as established by soundings. In addition, these charts included information on shoals, reefs, and other navigational needs.