Fincantieri Bay Shipbuilding, Sturgeon Bay, Wis., has delivered an articulated tug-barge unit (ATB) to Wawa Inc. The Media, PA-based company has a growing fuel business in Florida and sells about 2% of the gasoline sold in the U.S. It will use the new ATB to supply its growing network of retail locations in Florida, which was expected to number 140 by the end of last year. Keystone Shipping Co. is managing the new ATB.