The naval battle (405 bc) fought in the Hellespont, the strait between the Aegean Sea and the Sea of Marmara, that sealed the defeat of Athens in the Peloponnesian War. For five days the Athenian fleet attempted to draw Lysander and the Spartan fleet into battle. As the Athenians were disembarking after the fifth attempt, Lysander launched a surprise attack and captured 160 out of 180 triremes. He executed all the Athenians whom he took prisoner.