This medium-size towboat was built in 1982 by Superior Boat Works Inc. of Greenville, MS as the Sean L for Lalande Towing. The vessel was later sold and named Ray Eckstein. Today, the tug is owned by Kindra Lake Towing of Chicago, IL and named Koolcat. The Koolcat operates in the fleeting trades in the Chicago area, especially on the Calumet River.
- Type: Towboat
- Year Built: 1982
- Builder: Superior Boat Works Inc., Greenville, MS
- Length: 66′ 08″
- Breadth: 24′ 00″
- Depth: 8′ 06″
- Port of Registry: Chicago, IL