Cenac Towing of Houma, La., has long had a reputation for quality boats. Both their inland waterway push boats and their off-shore tugs are meticulous in their design, construction and maintenance. In the spring of 2000, the company commissioned a Cummins-powered 2,550 hp, 100 x 34-ft. triple screw off-shore tug, the Andrea Cenac. This May, Cenac is putting their newest and largest tug into service. As with their other new boats, the O.J. Cenac will be Cummins powered. At 130 x 38 ft. with a 15-ft. molded depth, this is a big boat. The new boat marks a milestone for both Cenac and Cummins as it is the first tug into service with Cummins' recently introduced QSK60 engines. With three of these new engines, each turning its own propeller, the O.J.