National Maintenance & Repair Diesel Engine Division

National Maintenance & Repair Diesel Engine Division

We have been providing repair services and new construction to the marine industry for the past century. Our shipyards, along the Ohio River give us the ability to promptly respond to our customers’ needs.

With in house machine, mechanical, and electrical shops we can take care of repairs of any size, as well as provide construction of custom equipment and marine vessels. Our drydocks, with capacities up to 2,500 tons, enable us to handle most vessels operating on the inland waterways.


National Maintenance & Repair Diesel Engine Division Locations


Harahan, Louisiana

Upper Miss River Mile 107

National Maintenance and Repair of Louisiana (NMRLA) is located in Harahan, Louisiana, just minutes north of New Orleans. 


Hartford, Illinois

Upper Miss River Mile 198.5

The Hartford, IL facility is located at the confluence of the Upper Mississippi and Missouri rivers.


Paducah, Kentucky

TN River Mile 4.5

Home to Excel Marine, National Maintenance and Repair of Kentucky and National Maintenance and Repair Diesel Engine Division, Paducah, KY serves as a strategic service point at the crossroads of our inland river system. 


South Point, Ohio

OH River Mile 318

The South Point, OH facility is located on the Ohio River at the mouth of the Big Sandy River.


McNational, Inc. continues to expand their service capabilities and locations to serve broader markets. Today, the company has an extensive fleet of harbor boats and shipyards on the Ohio, Tennessee, and Mississippi rivers.