Tugboats shown along the Mississippi River corridor. Some of these have been retrofitted to reduce emissions.
Photo courtesy of Mississippi River Corridor and Ingram Barge Company
Portable emissions sampling equipment on a retrofitted tugboat
Photo courtesy of Mississippi River Corridor and Ingram Barge Company
A large, high horsepower marine engine used in a tugboat
Photo courtesy of Mississippi River Corridor and Ingram Barge Company
Installation of emerging technology diesel oxidation catalysts (DOCs) and crankcase ventilation systems on a tugboat
Photo courtesy of Mississippi River Corridor and Ingram Barge Company
Retrofitted engines mean a cleaner environment along the Mississippi River.
Photo courtesy of Mississippi River Corridor and Ingram Barge Company