Signal International, Inc., announced that work toward the design of an Articulated Tug/Barge Hopper Dredge for Great Lakes Dredge and Dock (GLDD) has been discontinued. Signal and GLDD entered into a contract for both the design and build of an AT/B Hopper Dredge in August 2012, with construction originally scheduled to begin in January 2013. According to Signal, the project has undergone numerous delays and construction has not started due to a series of major design changes initiated by GLDD.