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
Neuilly-sur-Seine perhaps the consonants were simply inverted under the influence of the many settlements of France called Neuilly (a frequent place name whose etymology is completely different from the special case of Neuilly-sur-Seine). Until the French Revolution, the settlement was often referred to as "Port-Neuilly", but at the creation of French communes in 1790 the "Port" was dropped and the newly born commune was named simply Neuilly. On 1 January 1860, the city of Paris was enlarged by annexing neighbouring communes. On that occasion, a part of the territory of Neuilly-sur-Seine was annexed by the city of Paris, and forms now