Clackamas County / Ë k l Ã¦ k É m Éª s / is a county in the U.S. state of Oregon. As of the 2010 census, the population was 375,992, making it Oregon's third-most populous county. Its county seat is Oregon City.
By 1850, this journey was halved. For instance the clipper ship Oriental was able to sail from Hong Kong to London in 97 days that year. The absolute one day distance record made by a clipper involved 436 nautical miles. Clipper ships were fast but no specific rig type was standard. By 1845, the term was used in conjunction with a name indicating the cargo carried or area served by a fast-sailing vessel and a specific rig type was usually indicated.
Once on the road, emigrants could expect to travel 12 to 20 miles a day, under the best conditions. In the immense open spaces of the Great Plains, this frequently meant that settlers stopped for the night within sight of their previous day's campsite.