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He sailed northward from Greece to Iceland. Worked out a method in determining Latitudes and using astronomical measurements proposed that tides were a product of lunar influences.
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Conqured one of the greatest trades problems. Getting around the tip of Africa.
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Cicumnavigated the globe through a passageway at 50 degrees S Latiude now called the Straights of Magellan.
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Cook commanded three voyages of discovery for Great Britain, and sailed around the world twice. The British Admiralty appointed Cook, then a Lieutenant, to lead a scientific expedition that would sail to the island of Tahiti in the south Pacific to establish an astronomical observatory.
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Published the first map of the gulf stream,
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US Navy officer who compiled navel charts and Instrumentations that when used logged, and compiled allowed sailers to avoid catostrophic weather conditions, currents, and tides.
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It was the first expedition organized specifically to gather data on a wide range of ocean features, including ocean temperatures seawater chemistry, currents, marine life, and the geology of the seafloor.
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First determined the worlds circumfrence by using observations while looking down a well on the summer solstice. He just miscalculated off by 25 miles.
