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,
Layout of the Port of Tianjin several small barge wharves, but it is planned to expand as part of the development of the Binhai Tourism Area. There are two service wharves planned, 230 m and 150 m in length, plus a large environmental monitoring base, passenger terminal, construction materials wharves and yachting marina. The Beitang Fishing Harbor is directly north, inside the river estuary. The Dagukou Port Area () lies on the southern side of the Haihe river mouth. It is composed of the wharves of the Tianjin Lingang Harbor Economic Zone (), which is a large industrial area being constructed on reclaimed land. The Dagukou