Over the years, Rodriguez triple-screw shallow-draft towboats have won a following in the shallow waters of the Mississippi River estuary. Many of these boats are the distinctive aft-cabin Lugger-type of vessel. Recently Mid-River Terminals of Osceola, Ark. has taken delivery of a new design towboat from Rodriguez. With a conventional forward-house pusher configuration, the new 70- by 30-foot MV Dianna Lynn utilizes the same propulsion as the Lugger tugs. This is composed of three in-line six-cylinder Cummins QSK19 engines, each delivering 660 HP.