Seine River Steamers early vessels meant that positive traction by pulling on a chain against a deadman or anchor was much more effective. In the 1830s river travel was considered dangerous, so much so that insurers would put a 25 percent premium on cargoes and vessels travelling the route. The Seine is divided into three sections, the lower or Oise section, middle or Paris Section, and upper or Marne section. Ships enter the river at Le Havre through a bad tidal bore. (Victor Hugo's favourite daughter was killed while travelling in a small boat across the bore.) Oceangoing ships can travel to Rouen,
Course of the Willamette River Park on the left. Between the Hawthorne and Steel bridges, the Eastbank Esplanade and I-5 are on the river's right. Downstream of the Broadway Bridge, the river flows under the Fremont Bridge, which carries Interstate 405 and U.S. Route 30. Between the bridge and Sauvie Island, Route 30 runs roughly parallel to the left of the river between it and Forest Park in the Tualatin Mountains (West Hills). Below this, Swan Island and its marine terminals, run by the Port of Portland, is on the right at about from the mouth, and Balch Creek enters from the left. Near Swan