Navigator in the context of "Navigation"

Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space or on the surface of the Earth without relying solely on estimated positional calculations, commonly known as dead reckoning. Celestial navigation is performed without using satellite navigation or other similar modern electronic or digital positioning means.

Celestial navigation uses "sights," or timed angular measurements, taken typically between a celestial body (e.g., the Sun, the Moon, a planet, or a star) and the visible horizon. Celestial navigation can also take advantage of measurements between celestial bodies without reference to the Earth's horizon, such as when the Moon and other selected bodies are used in the practice called "lunars" or the lunar distance method, used for determining precise time when time is unknown.

Between 1492 and 1504, the Italian explorer and navigator Christopher Columbus led four transatlantic maritime expeditions in the name of the Catholic Monarchs of Spain to the Caribbean and to Central and South America. These voyages led to Europeans learning about the New World the Americas. This was an early breakthrough in the period known in Europe as the Age of Exploration, which saw the colonization of the Americas, a related biological exchange, and trans-Atlantic trade. These events, the effects and consequences of which persist to the present, are often cited as the beginning of the modern era.

Born in the Republic of Genoa, Columbus was a navigator who sailed in search of a westward route to India, China, Japan and the Spice Islands thought to be the East Asian source of spices and other precious oriental goods obtainable only through arduous overland routes. Columbus was partly inspired by 13th-century Italian explorer Marco Polo in his ambition to explore Asia. His initial belief that he had reached "the Indies" has resulted in the name "West Indies" being attached to the Bahamas and the other islands of the Caribbean.

Pedro Álvares Cabral (European Portuguese: [ˈpeðɾu ˈalvɐɾɨʃ kɐˈβɾal]; born Pedro Álvares de Gouveia; c. 1467 or 1468 – c. 1520) was a Portuguese nobleman, military commander, navigator and explorer regarded as the European discoverer of Brazil. He was the first human in history to ever be on four continents, uniting all of them in his famous voyage of 1500, where he also conducted the first substantial exploration of the northeast coast of South America and claimed it for Portugal. While details of Cabral's early life remain unclear, it is known that he came from a minor noble family and received a good education. He was appointed to head an expedition to India in 1500, following Vasco da Gama's newly opened route around Africa. The undertaking had the aim of returning with valuable spices and of establishing trade relations in India—bypassing the monopoly on the spice trade then in the hands of Arab, Turkish and Italian merchants. Although the previous expedition of Vasco da Gama to India, on its sea route, had recorded signs of land west of the southern Atlantic Ocean (in 1497), Cabral led the first known expedition to have touched four continents: Europe, Africa, America, and Asia.

His fleet of 13 ships sailed far into the western Atlantic Ocean, perhaps intentionally, and made landfall (April 1500) on what he initially assumed to be a large island. As the new land was within the Portuguese sphere according to the 1494 Treaty of Tordesillas, Cabral claimed it for the Portuguese Crown. He explored the coast, realizing that the large land mass was probably a continent, and dispatched a ship to notify King Manuel I of the new territory. The continent was South America, and the land he had claimed for Portugal later came to be known as Brazil. The fleet reprovisioned and then turned eastward to resume the journey to India.

Abel Janszoon Tasman (Dutch: [ˈaːbəl ˈjɑnsoːn ˈtɑsmɑn]; 1603 – 10 October 1659) was a Dutch seafarer and explorer, best known for his voyages of 1642 and 1644 in the service of the Dutch East India Company (VOC). He was the first European to reach New Zealand, which he named Staten Landt. He was also the eponym of Tasmania.

Likely born in 1602 or 1603 in Lutjegast, Netherlands, Tasman started his career as a merchant seaman and became a skilled navigator. In 1633, he joined the VOC and sailed to Batavia, now Jakarta, Indonesia. He participated in several voyages, including one to Japan. In 1642, Tasman was appointed by the VOC to lead an expedition to explore the uncharted regions of the Southern Pacific Ocean. His mission was to discover new trade routes and to establish trade relations with the native inhabitants. After leaving Batavia, Tasman sailed westward to Mauritius, then south to the Roaring Forties, then eastward, and reached the coast of Tasmania, which he named Van Diemen's Land after his patron, Anthony van Diemen. He then sailed north east, and was the first European to discover the west coast of New Zealand, which he named Staten Landt. It was later renamed Nieuw Zeeland, after the Dutch province of Zeeland, by Joan Blaeu, official Dutch cartographer to the Dutch East India Company.

Juan de la Cosa (c. 1450 – 28 February 1510) was a Castilean-Basque navigator and cartographer, known for designing the earliest European world map which incorporated the territories of the Americas discovered in the 15th century.

De la Cosa was the owner and master of the Santa María, and thus played an important role in the first and second voyage of Christopher Columbus to the West Indies.

Henry Hudson (c. 1565 – disappeared 23 June 1611) was an English sea explorer and navigator during the early 17th century, best known for his explorations of present-day Canada and parts of the Northeastern United States.

In 1607 and 1608, Hudson made two attempts on behalf of English merchants to find a rumoured Northeast Passage to Cathay via a route above the Arctic Circle. In 1609, he landed in North America on behalf of the Dutch East India Company and explored the region around the modern New York metropolitan area. Looking for a Northwest Passage to Asia on his ship Halve Maen ("Half Moon"), he sailed up the Hudson River, which was later named after him, and thereby laid the foundation for Dutch colonization of the region. His contributions to the exploration of the New World were significant and lasting. His voyages helped to establish European contact with the native peoples of North America and contributed to the development of trade and commerce.

Willem Barentsz (Dutch pronunciation: [ˈʋɪləm ˈbaːrənts]; c. 1550 – 20 June 1597), anglicized as William Barents or Barentz, was a Dutch navigator, cartographer, and Arctic explorer.

Barentsz went on three expeditions to the far north in search for a Northeast passage. He reached as far as Novaya Zemlya and the Kara Sea in his first two voyages, but was turned back on both occasions by ice. During a third expedition, the crew discovered Spitsbergen and Bear Island, but subsequently became stranded on Novaya Zemlya for almost a year. Barentsz died on the return voyage in 1597.