Four Down, Two To Go
MTU Series 4000 engines power fleet of inland waterway towboats
Rolls-Royce Power Systems subsidiary MTU has been selected by Memphis, Tennessee, U.S.A.-based Southern Towing Co. to power six inland waterway towboats. Four new and two existing vessels will be outfitted with a total of twelve Series 4000 Ironmen engines in 8- and 12-cylinder configurations.
Powered by twin MTU 8V 4000 engines designed to run at a constant 1800 r/min, the first two new vessels to be put into service were 30 m Z-drive sister towboats named the Paula Fortier and the Theresa Echols. Soon to follow were two 36.5 m Z-drive towboats christened the Capt. Tommy Parrish and the Capt. H.R. Kirtley, both powered by twin MTU 12V 4000 M53 engines rated to produce 1380 kW at 1800 r/min. The Series 4000 engines are matched to ZF Marine Z-Drive steering systems.
Two repower projects, each utilizing the MTU 12V 4000 M53 engine, are still on the horizon. The new engines will increase overall fuel efficiency and decrease emissions for two existing push boats, MTU said.