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Red text = Submarines
Blue text = Submersibles
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Green text = Commercial Exploitation
Dark blue text = Surface and Subsurface Exploration |
< 1800s
1481
Portuguese explorer Bartolomeu Dias (c. 1450 - May 29, 1500) accompanies Diogo de Azambuja on an expedition to the Gold Coast.
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October 10, 1486
Portuguese explorer Bartolomeu Dias (c. 1450 - May 29, 1500) is appointed by King John II of Portugal as the head of an expedition which is to endeavor to sail around the southern end of Africa in hopes of finding a trade route leading to Asia. The chief purpose of the expedition is to find the country of the legendary Christian African king known as Prester John.
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August 1487
Portuguese explorer Bartolomeu Dias (c. 1450 - May 29, 1500) leaves Lisbon with a fleet consisting of three ships, two armed caravels of fifty tons each and one supply-ship. He is accompanied by Pêro de Alenquer -- who wrote a description of Vasco da Gama's first voyage, João Infante, Álvaro Martins, and João Grego. The supply-ship was commanded by Bartolomeu's brother, Pêro Dias. There were also two African men and four women on board who were to be set ashore at suitable spots to explain to the natives the purpose of the expedition.
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1488
Portuguese explorer Bartolomeu Dias (c. 1450 - May 29, 1500) rounds Africa's Cape of Good Hope.
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