The Athenian navy was a powerful maritime force in ancient Greece, primarily during the 5th century BCE. It played a crucial role in the Peloponnesian War against Sparta and was instrumental in securing Athenian dominance over the Aegean Sea. The navy was composed mainly of triremes, fast and agile warships that allowed for effective naval combat and trade protection. The success of the Athenian navy was largely due to its skilled sailors and innovative tactics. The navy's strength helped establish Athens as a leading power in the Delian League, enabling it to control trade routes and expand its influence across the Mediterranean.