It is believed to date from between 14, and was recovered from the wreck of a Portuguese explorer ship which sank during a storm in the Indian Ocean in 1503. The tool called astrolabe is a bronze disc, which measures 17.5 centimetres in diameter, and is engraved with the Portuguese coat of arms and the personal emblem of Don Manuel I, the King of Portugal from 1495-1521. Researchers at the University of Warwick in the UK accurately scanned the item to within 0.1 millimetres and reproduce a high-resolution 3D model. At the same time, the name of another great sailor. He has been solely credited with the honour of having discovered the sea-route from Europe to India via the Cape of Good Hope. The world’s earliest known marine navigation tool that may have helped legendary Portuguese explorer Vasco da Gama find his way to India has been discovered in a 14th-century shipwreck in the Indian Ocean, according to British researchers. Vasco da Gamas name has figured in all history books, whether they relate to World, European,1 Asian or Indian history,2 as a great sailor and adventurer. The world’s earliest known marine navigation tool that may have helped legendary Portuguese explorer Vasco da Gama find his way to India has been discovered in a 14th-century shipwreck in the Indian Ocean.
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