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240
Eratosthenes
He invented a system of latitude and longitude that we use now to sail the seas. -
247
Compass
The compass was invented in ancient China to make sure perfect balance was achieved in any direction -
325
pytheas
was a Greek geographer and explorer from the Greek colony, Massalia (modern day Marseilles). He made a voyage of exploration to northwestern Europe at about 325 BC. -
Nov 11, 1446
Prince Henry the Navigator
Although he was called Prince Henry the Navigator by the English, Prince Henry never actually sailed on any of the voyages of discovery he sponsored. Instead, Prince Henry established a school for the study of the arts of navigation, mapmaking, and shipbuilding. This would allow sailors to better guide their ships and to come up with new ship designs. -
Jan 10, 1522
Ferdinand Magellan
Magellan's expedition was the first to circumnavigate the globe and the first to navigate the strait in South America connecting the Atlantic and the Pacific ocean -
James Cook
Cook's 12 years sailing around the Pacific Ocean contributed much to European knowledge of the area. Several islands were encountered for the first time by Europeans, and his more accurate navigational charting of large areas of the Pacific was a major achievement -
benjamin frankin
An aging Franklin accumulated all his oceanographic findings in Maritime Observations, published by the Philosophical Society's transactions in 1786. It contained ideas for sea anchors, catamaran hulls, watertight compartments, shipboard lightning rods and a soup bowl designed to stay stable in stormy weather. -
matthew maury
was an American astronomer, historian, oceanographer, meteorologist, cartographer, author, geologist, and educator. -
challenger expodition
was a scientific exercise that made many discoveries to lay the foundation of oceanography -
Torpedo
a self-propelled explosive projectile weapon, launched above or below the water surface to destroy intemded targets -
bathysphere
is a spherical deep-sea submersible which is unpowered and is lowered into the ocean on a cable. -
SONAR
(originally an acronym for SOund Navigation And Ranging) is a technique that uses sound propagation (usually underwater.) -
SCUBA
(self contained underwater breathing apparatus) Developed by Emile Gagnan and Jacques-Yves Cousteau, which compressed gas is inhaled from a tank and then exhaled into the water -
Buoy
Serves many different uses. Usually used as anchors or attatched to ropes to act as barriers -
ptolemy
He was a mathematician, astronomer, geographer, astrologer, and poet (of a single epigram in the Greek Anthology).
