Ocean Tug & Barge Engineering Corp. will design the tug portion of a new AT/B dredge to be built at Signal International, in Orange, TX, for Great Lakes Dredge & Dock Co. The “RAPID” Class AT/B’s high speed parent form lines for both the tug and the barge were developed by OT&BE and Taisei Engineering, of Tokyo. MARIN is adapting the lines to the specific dredge requirements and engaging in the associated optimization. The design feathers near-ship speeds with ship-like horsepower and is a great advance in AT/B design. Container AT/B’s under design with the same hulls will be capable of 16+ knots at near-ship HP levels. OT&BE will also design the supporting structure in the notch area of the barge to accept the Articouple connection system that will be used to connect the tug and barge.