The Westport, a red and white hopper dredge operated by Manson Construction, dredges near the Port of Alaska on April 3, 2019. From May 1 to Nov. 1 each year, the U.S. Army Corps of Engineers removes built-up sediment from the seafloor near the Port of Alaska to maintain shipping channels and dock access. An estimated 50 percent of all goods entering Alaska come through this port.