America’s first offshore bunkering barge designed specifically to deliver liquefied natural gas (LNG) began operations in Port Canaveral, Fla., in March. Q-LNG 4000 is part of an articulated tug-barge (ATB) that was constructed through an agreement between Q-LNG Transport and Shell Trading (U.S.) to provide LNG to ships and ports in Florida and the Caribbean.  Nicknamed Q4K, the barge is…