Foss Maritime is moving additional equipment to the Columbia River because of business growth in the region, officials said. The company announced that it would move two of its tractor tugs, Tiger 8 (center)and Tiger 9 (right), to its Columbia River fleet. The tugs, built at Kewalo Shipyard in Honolulu in 2009, each measure 88’x34’x14′ and develop a total of 4,400 hp, giving them running speeds of 12 knots. Tiger 8 was expected to begin work on the river in November. Tiger 9, however, will undergo retrofitting to improve its accommodations before entering the Columbia fleet. Grain and port facilities in the region are experiencing growth and new projects in the works for both the Columbia and Snake rivers are the catalysts for the equipment change, Foss said.