Note 1901 — BOOK III. AN ACCOUNT OF COUNTRIES, NATIONS, SEAS, TOWNS, HAVENS, MOUNTAINS, RIVERS, DISTANCES, AND PEOPLES WHO NOW EXIST OR FORMERLY EXISTED. INTRODUCTION.
John Bostock translation
He alludes to an old tradition that the Argonauts sailed into the Ister or Danube, and then into the Save, till they came to the spot where the modern town of Upper Laybach stands, and that here they built Nauportus, after which they carried their ship across the mountains on men’s shoulders into the Adriatic. He intends to suggest therefore that the place had its name from the Greek ναῦς “a ship” and πορθμὸς “a passage.”