The Battle of Aegospotami was a Spartan naval victory over the Athenians at the end of the Peloponnesian War 405 BC off Aegospotami. Lysander's decisive victory over the Athenian fleet broke the, until then unchallenged Athenian naval superiority and effectively ended the war. An Athenian fleet of some 180 triremes lay at Aegospotami and 170 Peloponnesian ships, under Lysander, lay at Lampsacus on the southern shore. On four successive days the Athenian fleet rowed across the strait, hoping to draw Lysander's force out to give battle, but without success. On the fifth day Lysander waited until the Athenians made their usual sortie and returned to their base; once they had anchored, Lysander's fleet made a sudden dash across the water, pounced on the anchored Athenians, captured 160 ships, and killed the crews. Research Battle of Aegospotami