This large z-drive tug was built in 1991 by Matsuura Tekko Zosen of Higashino, Japan as the Lambert for Cleveland Cliffs-Robe River Iron in Australia. In 2014, she was acquired by McKeil Marine Limited of Hamilton, ON and renamed Lois M.
- Type: Twin Screw Tractor Tug
- Year Built: 1991
- Builder: Matsuura Tekko Zosen, Higashino, Japan
- Engines: 2 Niigata
- Horsepower: 4,800 bhp
- Length: 107′ 09″
- Breadth: 34′ 05″
- Depth: 17′ 05″
- Port of Registry: St. John’s, NL