When the wreck of Ernest Shackleton’s ship Endurance was found nearly 10,000 feet below the surface of Antarctica’s Weddell Sea in March 2022, it was located just 4 miles from its last known position, as recorded by the Endurance’s captain and navigator, Frank Worsley, in November 1915.
That’s an astonishing degree of accuracy for a position determined with mechanical tools, book-length tables of reference numbers, and pen and paper.
