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Couldn't find the map for it so here's what showed up for "first ever nile maps created"

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The first ever river maps made were made of the Nile to help with trade

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Chinese navigators would make charts of the ocean and sell them around.

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Compasses were first made out of magnetized iron nails that had been struck by lodestones in the Han Dynasty.

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Not as handsome as his fellow naavigators

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Prince Henry the Navigator - 1394 - 1460

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Prince Henry the Navigator - 1394 - 1460

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The Prince was responsible for the discovery of a lot of exploration across western Africa and most waters

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An Italian navigator who made four Spanish based voyages to the Americas, sponsored by catholic monarchs and being widely known for starting the exploration craze in Europe

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Used to measure longitude and was first proposed by Dutch Scientist Gemma Frisius in 1530.

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James Cook, a British explorer, cartographer and naval officer, was most famous for his three voyages in which he was the first documented person to come into contact with the shores of Hawaii and Australia.

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The Challenger expedition of 1872–1876 was a scientific programme that made many discoveries to lay the foundation of oceanography. The expedition was named after the naval vessel that undertook the trip, HMS Challenger.

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He just... looks so sad... so devoid of life

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Ronald Amundsen discovers south pole - 1911

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Ronald Amundsen discovers south pole - 1911

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Ronald discovered the south pole at 1911

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April 15, the White Star Liner Titanic sinks with horrendous loss of life after striking an iceberg in the North Atlantic Ocean. This leads to a concerted effort to devise an acoustic means of discovering objects in the water forward of the bow of a moving vessel.

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*in a poor British accent* What a refined gentlemen yes

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On April 27, Reginald Fessenden, of Submarine Signal Corporation, sails on the U.S. Coast Guard Cutter Miami. He uses a Fessenden Oscillator to reflect a signal off an iceberg and simultaneously reflect an acoustic signal off the sea bottom. This test marks the beginning of the acoustic exploration of the sea.

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Invented by the German inventor Alexander Behm and given Patent in 1913. Echo sounding is a form of measuring depth in the ocean by reflecting sound waves off the bottom of the ocean floor.

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World War I accelerates oceanic acoustic research as both the U.S. Navy and the Army Coast Artillery develop research programs to devise means to detect enemy submarines.

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America starts using Echo Sounding - 1923

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America starts using Echo Sounding - 1923

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In 1923, the U.S. Coast and Geodetic Survey (C&GS, formerly the Coast Survey) Ship Guide was equipped with a Hayes echo sounder and proceeded to the North Pacific Ocean via the Panama Canal and the west coast of Mexico.

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The USS Nautilus was built, the first ever nuclear submarine.

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She looks so proud of herself, I'm proud of her too

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Tanya Atwater led the first all-woman oceanographic expedition. Until that time, gender policies restricted women oceanographers from participating in voyages to a significant extent

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A huge oil spill off the coast of California caused by a blow-out, meaning the pressure controls failed and caused a spout of oil to spill everywhere.