Piraeus under Lysander blockaded Piraeus and subsequently Athens surrendered to the Spartans, putting an end to the Delian League and the war itself. Piraeus would follow the fate of Athens and was to bear the brunt of the Spartans' rage, as the city's walls and the Long Walls were torn down; the Athenian fleet surrendered to the victors and some of the triremes burnt, while the "neosoikoi" were also pulled down. As a result, the tattered and unfortified port city was not able to compete with prosperous Rhodes, which controlled commerce. In 403 BC, Munichia was seized by Thrasybulus and the
Piraeus also supplemented and modernised, with dredging operations, the construction of the Royal Landing, the Troumba Pier and the quay-ways up to the Customs House area, the commencement of construction work on the Outer Moles and the completion of permanent dry-docks. At the end of the 19th century, Piraeus had a population of 51,020 people. The establishment of the Port Committee in 1911, which controlled the works of construction and maintenance of the port, and the Piraeus Port Authority in 1930, which made a more efficient job of managing a port slowly increasing in traffic, played a catalytic role in the