ATB REVIEWThe Enduring, Iconic U.S. Flag ATB ModelT e view from the Bouchard Boardroom and … beyond.By Joseph Keefehe roots of the now familiar and reliable articulated tug and barge (ATB) business are deep and stretch all the way back to the 1800’s. Along the way, various Tpatents to connect a tug and a barge with a secure mechan-ical connection were