http://en.wikipedia.org/wiki/Piri_Reis_map#Analysis
字很多沒仔細看，隨便瞄一下:

The Piri Reis map is not the most accurate map of the sixteenth century, as has been claimed, there being many, many world maps produced in the remaining eighty-seven years of that century that far surpass it in accuracy. The Ribero maps of the 1520s and 1530s, the Ortelius map of 1570, and the Wright-Molyneux map of 1599 (‘the best map of the sixteenth century’) are only a few better-known examples.

他的圖沒傳聞那麼精準，同時代還有很多比它更準的圖.....