Androsthenes of Thasos

Androsthenes of Thasos, son of Callistratus, was one of the admirals of Alexander the Great. He sailed as a trierarch with Nearchus, and was also sent by Alexander down the Euphrates to explore the coast of the Persian Gulf, skirting the coast of Arabia in a triacontor and sailing further than Archias of Pella. He wrote an account of this voyage, titled The Navigation of the Indian sea. Very few fragments remain, it is possible Eratosthenes was the last person to read it in full.