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first to calculate the circumfrenece of the earth
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phyteas created a navigation method using the north star
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prince henry established a marine observatory to
improve the Portuguese sailing endeavors -
sonar is the technique that uses sound propagation to detect other vessels and comunicate
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ferdinand magallan circumnavigated the globe through a passage way the straights of mallagan
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Using Astronomy and Mathematics he began calculating Longitudes
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james cook discovered a hawaiin group and the first person to discover the atlantic circle
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matthew maury joined the us navy at the age of 19 in 1825 but after a leg injury he devoted his life to the study of navigation , currents , and winds
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chrales darwin gets the origin of species published
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4 year expedition
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the bathysphere is a sphere that is lowered into the deep sea by a cord and uses no electrical power
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Discoverd Surface currents and published the first map of the Gulf Stream in 1977.
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herodontus contructed a map of the meditterian sea
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eric and red sailed westward of greenland and found bafin island
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leif ericson discovered vinland
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ptolemy was a greek geogarpher
