Penteconter

Coinage of Tennes, king of Sidon, dated 351/0 BC. Phoenician pentekonter sailing left. Date above (here faint), waves below. King of Persia standing right, holding up lion by lock of mane; Aramaic T’ between.

The penteconter (alt. spelling pentekonter, pentaconter, pentecontor or pentekontor; Greek: πεντηκόντερος, pentēkónteros, "fifty-oared"[1]), plural penteconters, was an ancient Greek galley in use since the archaic period.

In an alternative meaning, the term was also used for a military commander of fifty men in ancient Greece.[2]