America’s First LNG Articulated Tug and Barge Unit Launched 17 October 2019 Halter Marine has launched Q-LNG 4000, America’s first offshore LNG articulated tug and barge (ATB) unit.Author: Capt. Johnhttps://worldmaritimenews.com/archives/284874/americas-first-lng-articulated-tug-and-barge-unit-launched/