In a second battle shortly after this, Phormio and his small force triumphed against an even larger Peloponnesian fleet of 77 ships. Drawn into the narrow waters of the Corinthian gulf to protect Naupactus, the Athenians were initially routed and divided, but 11 Athenian ships which were pursued into Naupactus were able to turn about on their pursuers and defeat the numerically superior force opposite them. This victory preserved Athenian naval supremacy in the Gulf and put an end to Peloponnesian attempts to challenge it during this period of the war.