Silas Wright. Raft boat on Upper Mississippi. The Silas Wright was built at Eau Claire, Wisconsin, during the winter of 1866-67. Her hull was 106 feet long, 20 feet beam and 3 feet depth of hold; 91.51 tons. She was owned by Ingram and Kennedy and operated during 1867 as a packet between Read's Landing, Minnesota, on the Mississippi River, and Eau Claire, Wisconsin, about 70 miles above the mouth