В порядке справки вывешу версию хронологии португальских плаваний (правда, на каком-то португало-английском, но и так все понятно)
Цитата:
1412—Prince Henry, the Navigator, orders the first expeditions to the African Coast and Canary Islands.
1419—Joгo Gonзalves Zarco and Tristгo Vaz Teixeira discovered Porto Santo island, in the Madeira group.
1420—The same sailors and Bartolomeu Perestrelo discovered the island of Madeira, which at once began to be colonized.
1422—Cape Nao, the limit of Moorish navigation is passed as the African Coast is mapped.
1427—Diogo de Silves discovered the Azores, which was colonized in 1431 by Gonзalo Velho Cabral.
1434—Gil Eanes sailed round Cape Bojador, thus destroying the legends of the ‘Dark Sea’.
1434—the 32 point compass-card replaces the 12 points used until then.
1435—Gil Eanes and Afonso Gonзalves Baldaia discovered Garnet Bay (Angra dos Ruivos) and the latter reached the Gold River (Rio de Ouro).
1441—Nuno Tristгo reached Cape White.
1443—Nuno Tristгo penetrated the Arguim Gulf.
1444—Dinis Dias reached Cape Green (Cabo Verde).
1445—Alvaro Fernandes sailed beyond Cabo Verde and reached Cabo dos Mastros (Cape Red)
1446—Alvaro Fernandes reached the northern Part of Portuguese Guinea
1452—Diogo de Teive discovers the Islands of Flores and Corvo.
1458—Luis Cadamosto discovers the first Cape Verde Islands.
1460—Death of Prince Henry, the Navigator. His systematic maping of the Atlantic,reached 8є N on the African Coast and 40є W in the Atlantic (Sargasso Sea) in his lifetime.
1461—Diogo Gomes and Antуnio Noli discovered more of the Cape Verde Islands.
1461—Diogo Afonso discovered the western islands of the Cabo Verde group.
1471—Joгo de Santarйm and Pedro Escobar crossed the Equator. So the southern hemisphere was discovered and the sailors began to be guided by a new constellation, the Southern Cross. The discovery of the islands of Sгo Tome and Principe is also attributed to these same sailors.
1472—Corte Real and Alvaro Martins Homem reached the Land of Cod, now called Newfoundland.
1482—Diogo Cгo reached the estuary of the Zaire (Congo) and placed a landmark there. Explored 150kms upriver to the Ielala Falls.
1484—Diogo Cгo reached Walvis Bay, south of Namibia.
1487—Afonso de Paiva and Pero da Covilhг traveled overland from Lisbon in search of the Kingdom of Prester John. (Ethiopia)
1488—Bartolomeu Dias, crowning 50 years of effort and methodical expeditions, rounded the Cape of Good Hope and entered the Indian Ocean. They had found the "Flat Mountain" of Ptolomeu's Geography.
1489/92—South Atlantic Voyages to map the winds
1490—Colombus leaves for Spain after his father-in-law's death.
1492—First exploration of the Indian Ocean.
1494—The Treaty of Tordesilles (46є 37' W), the pope divided the world into two parts, between Portugal and Spain.
1495—Voyage of Joao Fernandes, the Farmer, and Pedro Barcelos to Greenland. During their voyage they discovered the land to which they gave the name of Labrador (lavrador, farmer)
1494—First boats fitted with cannon doors and topsails.
1498—Vasco da Gama led the first fleet around Africa to India, arriving in Calicut.
1498—Duarte Pacheco Pereira explores the South Atlantic and the South American Coast North of the Amazon River.
1500—Pedro Бlvares Cabral discovered Brazil on his way to India.
1500—Gaspar Corte Real made his first voyage to Newfoundland, formerly known as Terras de Corte Real.
1502—Miguel Corte Real set out for New England in search of his brother, Gaspar. Joгo da Nova discovered Ascension Island. Fernгo de Noronha discovered the island which still bears his name.
1503—On his return from the East, Estevгo da Gama discovered Santa Helena island.
1506—Tristгo da Cunha discovered the island that bears his name. Portuguese sailors landed on Madagascar.
1509—The Gulf of Bengal crossed by Diogo Lopes Sequeira. On the crossing he also reached Malacca.
1512—Antуnio de Abreu discovered Timor island.
1513—The first trading ship to touch the coasts of China, under Jorge Бlvares and Rafael Perestrello later in the same year.
1517—Fernгo Pires de Andrade and Tomй Pires were chosen by Manuel I of Portugal to sail to China to formally open relations between the Portuese Empire and the Ming Dynasty during the reign of the Zhengde Emperor.
1522—Australia discovered by Cristovгo de Mendonзa (1522) and Gomes de Sequeira (1525). (This assertion is currently awaiting wide acceptance pending the evidence).
1526—Discovery of New Guinea.
1541—Fernгo Mendes Pinto, Diogo Zeimoto and Cristovгo Borralho reached Japan.
1542—The coast of California explored by Joгo Rodrigues Cabrilho.
1557—Macau (Macao) given to Portugal by the Emperor of China as a reward for services rendered against the pirates who infested the China Sea.
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Так что откуда Пири Рейс брал данные по Африке вопросов, вроде, нет. С Южной Америкой - хуже.
Обратите внимание: с 1489 по 1492 три года шастали по Южной Атлантике с целью исследования ветров. Кто это был? Где результаты? Не напоролся ли он там на что-нибудь? Не уносило ли кого-нибудь куда-нибудь?