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KNAPPTON

Built in 1966 by the Nichols Boat Works Company of Hood River, Oregon as the Knappton (hull #165) for the Knappton Towboat Company of Astoria, Oregon.

The tug was later acquired by Diversified Marine Incorporated of Portland, Oregon. Where she was renamed as the Earl R.

In 2009, she was acquired by the SDS Lumber Company of Bingen, Washington. Where the tug was renamed as the Bruce M.


  • Vessel Name: KNAPPTON
  • USCG Doc. No.: 503704
  • Vessel Service: TOWING VESSEL
  • Trade Indicator: Coastwise Unrestricted, Registry
  • Call Sign: WDF2045
  • Hull Material: STEEL
  • Hull Number: 165
  • Ship Builder: NICHOLS BOAT WORKS CO
  • Year Built: 1966
  • Length: 65.1
  • Hailing Port: BINGEN, WA
  • Hull Depth: 7.9
  • Hull Breadth: 24.2
  • Gross Tonnage: 72
  • Net Tonnage: 49
  • Owner:
    SDS LUMBER COMPANY
    123 INDUSTRIAL ROAD PO BOX 266
    BINGEN, WA 98605
  • Previous Vessel Names:
    Knappton, Earl R
  • Previous Vessel Owners:
    Knappton Towboat Company, Diversified Marine Incorporated