Seine Commercial craft (barges and push-tows) can use the river from Marcilly-sur-Seine, to its mouth. At Paris, there are 37 bridges. The river is only above sea level from its mouth, making it slow flowing and thus easily navigable. The Seine Maritime, from the English Channel at Le Havre to Rouen, is the only portion of the Seine used by ocean-going craft. The tidal section of the Seine Maritime is followed by a canalized section ("Basse Seine") with four large multiple locks until the mouth of the Oise at Conflans-Sainte-Honorine (170 km). Smaller locks at Bougival and at Suresnes lift the
History of the Hudson River cracked down on smuggling and associated activity before expanding the outposts along the Hudson River, especially Wiltwyck at the mouth of Esopus Creek. Stuyvesant attempted to establish a fort midway up the Hudson River. However, before that could be done, the British invaded New Netherland via the port of New Amsterdam. Given that the city of New Amsterdam was largely defenseless, Stuyvesant was forced to surrender the city and the colony to the British. New Amsterdam and the overall colony of New Netherland was renamed New York, after the Duke of York. The Dutch regained New York temporarily, only to