-
276
eratosthenes
first to calculate the circumfrenece of the earth -
300
north star
phyteas created a navigation method using the north star -
Jan 4, 1400
the navigator
prince henry established a marine observatory to
improve the Portuguese sailing endeavors -
Jan 6, 1490
sound navigation and radar
sonar is the technique that uses sound propagation to detect other vessels and comunicate -
Jan 4, 1513
magallan
ferdinand magallan circumnavigated the globe through a passage way the straights of mallagan -
james cook
Using Astronomy and Mathematics he began calculating Longitudes -
hawaiin group
james cook discovered a hawaiin group and the first person to discover the atlantic circle -
matthew maury
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 -
darwin
chrales darwin gets the origin of species published -
challenger expedition
4 year expedition -
bathysphere
the bathysphere is a sphere that is lowered into the deep sea by a cord and uses no electrical power -
gulf stream
Discoverd Surface currents and published the first map of the Gulf Stream in 1977. -
greek contribution
herodontus contructed a map of the meditterian sea -
baffin island
eric and red sailed westward of greenland and found bafin island -
new found land
leif ericson discovered vinland -
ptolemy
ptolemy was a greek geogarpher
