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sailled northward from Greece to Iceland and worked out a method for determining latitudes and using astronomical measurements proposed that tides were a product of lunar influences
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established an marine observatory to improve the Portuguese sailing endeavors
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circumnavigated the globe through a passageway at 52 degrees South latitude now called the straights of Magellan.
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calculated Longitudes and published his findings in the royal Society's Philosophical Transactions, which gained him notoriety
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Benjamin Franklin developed an stream chart to help captains ride through the currents and take teo weeks off traveling time.
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Made uniform methods of making nautical meteorological observations at sea
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Captain George Nares traveled 70,00 nautical miles from Portsmouth, England discovering 4,000 new unknown species.
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is a technique that uses sound propagation (usually underwater, as in Submarine navigation) to navigate, communicate with or detect other vessels. IT harms other marine mammals as it confuses them because other animals such as whales use the same communication or prey detection system.
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is a spherical deep-sea submersible which is unpowered and is lowered into the ocean on a cable. Allows deep sea viewing and going underwater
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determined the worlds circumference while looking down a well on a summer solstice
