This large tugboat was built in 1977 by Langsten Slip & Batbyggeri A/S of Lansten, Norway as Duga. She came to Canada upon purchase by Three Rivers Boatmen in the 1990s. She was soon sold to Ocean Group of Quebec, QC.
Duga is based in Sorel, QC, and is used for ship assist and towing jobs.
- Type: Twin Screw Tugboat
- Year Built: 1977
- Builder: Langsten Slip & Batbyggeri A/S, Lansten, Norway
- Engines: 2 Wichman 7-cylinder
- Horsepower: 4,200 bhp
- Length: 114′ 02″
- Breadth: 32′ 10″
- Depth: 16′ 05″
- Port of Registry: Trois-Rivieres, QC