4 results
Nautical Astrolabe
This nautical astrolabe is thought to be among the earliest surviving nautical astrolabes and dates from about 1500−1520. Most nautical astrolabes had a carved mater (graduated circular element), unlike the solid and compact instrument shown here, which bears a resemblance to the astrolabes of Diogo Ribeiro (died 1533), a Portuguese cartographer and inventor who spent most of his life in Spain. The purpose of nautical astrolabes was to measure the altitude of the sun or a star above the horizon. Navigators could determine a ship’s latitude by knowing ...
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Cabildo of Gran Canaria, Canary Islands
The Benefits from Knowing the Basics and Rules of Seafaring
This work is a collection of eight treatises related to the science of seafaring and navigation by Ibn Mājid al-Julfārī al-Sa‘dī, the most renowned Muslim navigator of the 15th century (9th century AH). It was originally assembled in 1490. The works are bound together in one large tome and include information about the Indian Ocean, the Red Sea, the Persian Gulf, the Arabian Sea, and other major bodies of water known to the author. The work meticulously lists and describes sea routes, harbors, and other points of interest to ...
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Library of Congress
Compendium of Cosmography
Pedro de Medina (1493–1567) was a cartographer, author, and a founder of marine science. He lived in Seville, the center of the Spanish ocean-going commerce and the starting point for ships headed to the New World. He worked in an environment shaped by the Casa de Contratación (House of Trade), the Spanish government agency that controlled exploration and colonization, although he was never employed by it. In 1545 Medina published his most important work, El arte de navegar (The art of navigation), an overview of existing knowledge on this ...
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National Library of Spain
Book on Navigation
Originally composed in 1525 and dedicated to Sultan Süleyman I (the Magnificent), this great work by Piri Reis (died circa 1555) on navigation was later revised and expanded. Born in about 1470 in Gelibolu (Gallipoli), Piri Reis became an Ottoman admiral, geographer, and cartographer. The present manuscript, made mostly in the late 17th century, is based on the later expanded version and has some 240 exquisitely executed maps and portolan charts. They include a world map with the outline of the Americas (folio 41a) and maps of coastlines, with bays ...
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Walters Art Museum