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His major contribution was his ability to establish lattiutude and longitude lines on a map of many places.
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Calculated the earts circumfrance
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He made a voyage around northern Europe and wrote a book about his accounts.
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Help navigate the seas
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Under the orders from Prince Henry Gil Eannes reached the tip of Africa and sailed around the Cape.
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found the caribean islands
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Found the first sea route from Portugal to the east.
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Sailed around the world
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Found Australia
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In 1784, Franklin suggested following the Chinese model of dividing ships' holds into watertight compartments so that if a leak occurred in one compartment, the water would not spread throughout the hold and sink the ship.
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Matthew Maury studied the current paths of the ocean using botles and in 1855 published a book about oceanography.
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The Challenger expedtion 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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A technique used to navigate, communicate with, or detect other vessels.
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The Bathysphere was a steel vessel that was use for underwater viewing and exploration.
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The airforce realsed the final satalite and started a network called gps that made navigation easier and more efficant.
