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,
Steamboats of the Colorado River Fort Yuma at Jaeger's Ferry. In 1858, 1 mile above Colorado City, across the river from Fort Yuma, Arizona City was founded, (renamed Yuma in 1873). In 1865, a better location for an anchorage, and a port and shipyard was established at Port Isabel, Sonora, 157 miles below Fort Yuma and 7 miles east of the river mouth on the eastern outlet of the river. In 1873, Lerdo Landing appeared on the river, 3 miles above Port Famine, to connect the pioneering agricultural settlement of Colonia Lerdo to the steamboat traffic on the river. Port Isabel remained in use until