Penteconter vs. Trireme — What's the Difference?

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

A trireme (, TRY-reem; derived from Latin: trirēmis "with three banks of oars"; Ancient Greek: τριήρης triērēs, literally "three-rower") was an ancient vessel and a type of galley that was used by the ancient maritime civilizations of the Mediterranean, especially the Phoenicians, ancient Greeks and Romans.The trireme derives its name from its three rows of oars, manned with one man per oar. The early trireme was a development of the penteconter, an ancient warship with a single row of 25 oars on each side (i.e., a single-banked boat), and of the bireme (Ancient Greek: διήρης, diērēs), a warship with two banks of oars, of Phoenician origin.

A galley-type Grecian vessel with fifty oars. Watercraft

An ancient Greek or Roman galley or warship, having three tiers of oars on each side.

A Grecian vessel with fifty oars.

A galley with three banks of oars, one above the other, used mainly as a warship.

An ancient galley or vessel with tree banks, or tiers, of oars.

Ancient Greek or Roman galley or warship having three tiers of oars on each side