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
Guinguette by the Seine Guinguette by the Seine Guinguette by the Seine (Fr. "La Guinguette a deux sous", "the Tuppenny Bar") is a detective novel by Belgian writer Georges Simenon, featuring his character Inspector Jules Maigret. While visiting a condemned man in prison, he comments to Maigret that he knows someone at a ""guinguette a deux sous"" (a "tuppenny bar") who is equally deserving of the death penalty. Lenoir further reveals that he and an accomplice had witnessed a man whom they knew from the bar take a body and dump it in the Canal Saint-Martin. Maigret is unable to find this tuppenny bar,