Roy Thornton CollectionMV Diligent – Past and Present

MV Omni St Laurent

ex MV Diligent

Roy Thornton Collection

Roy Thornton Collection

Steel twin screw diesel engined tug built 1957-8 by P.K. Harris, Appledore. (Yard No 107) for the Dover Harbour Board.

Technical Data

  • Length: 27.52m (99.27 ft)(overall), 26.8m (88 ft) (between perpendiculars)
  • Breadth: 7.60m (24.11 ft)(Extreme)
  • Draught: 3.04m (9.97 ft) maximum
  • Tonnage: 161 gross, 30 net
  • Engines: 2 x 8-cylinder 22.292 reverse reduction geared Lister/Blackstone & Co diesels
  • Rated: 1,040 bhp
  • Speed: 12.5 knots
  • Bollard Pull: 21 tons
  • Call Sign: MXXG (@ 1974), VOPN (1989 – )
  • ID Number: 5090012
  • Official Number: 185700
  • Registry: Dover (1958 – ), Sorel P.Q. Canada (1989 – )
  • Sister Ship: Dominant


July 2nd 1957: Launched.

December 1957: Completed and delivered to the Dover Harbour Board at Dover

© Ted Ingham  Roy Thornton Collection

© Ted Ingham (left) and the Roy Thornton Collection (right)

1984: To Frank Pearce (Tugs) Ltd at Poole

© Mike Sartin  © Mike Sartin

© Mike Sartin (both)

1984: To S. & H. Towage

© Brian Fisher (Tilbury 1986)  © Brian Fisher (Tilbury 1986)

© Brian Fisher (Tilbury 1986)

1989: To Les Remorquages Sorel Inc, manager Les Services Maritimes Genco Ltd at Sorel, PQ (Canada), renamed OMNI ST-LAURENT

2002: To Le Ocean Groupe Inc at Quebec

© Kent Malo  © Kent Malo

© Kent Malo

2008: Still in service

All information is believed to be correct and no responsibility is accepted for errors and omissions. We would like to thank: Brian Fisher, Ted Ingham, Kent Malo and Mike Sartin for their assistance in producing this feature. A special thanks goes to World Ship Society (East Kent Branch).

 Article © Nigel Thornton and Ray Goodfellow (Dover Ferry Photos Group)


  1. I would be grateful for use of the Roy Thornton photos of tug Diligent to add my model plan I am drawing of this tug for a UK model magazine. Naturally full ack. of source would be included.
    Many thanks,

    1. Hello James,

      No problem.
      I’ll dig out the original prints, scan them at a higher quality and send them on!

      Nigel Thornton

      1. I am a very grateful for your cooperation, I can send you a few Clyde tugs in recompense.
        regards, and all best for 2013

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