No single one. It was an alliance of city-state fleets led by Sparta which incorporated ships from Aigina, Ambracia, Athens, Ceos, Chalcis, Corinth, Croton, Cythnus, Epidaurus, Eretria, Hermione, Leucas, Megara, Melos, Naxos, Serifos, Sicyon, Siphnus, Sparta, Styra, Troezen, about 378 in total.