Two Triremes RaceIn this fresco painting from the temple of Isis in Pompeii, two triremes — narrow warships powered by several banks of long oars — race in what was most likely a festival celebrating the goddess. Greeks, Carthaginians, and Romans all used triremes, which had bronze front pieces designed to smash into enemy ships. The one hundred to two hundred oarsmen had to row in time to achieve the necessary speed, which took long practice, so this religious celebration also served a military purpose. (© Ministero per i Beni le Attivita Culturali — Soprintendenza archeologia de Napoli/Scala/Art Resource, NY)