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LASSEN
PIctured as: the Lassen (Shaver Transportation) Photo by: Kyle Stubbs

Built in 1975 by Colberg Incorporated at Stockton, California as the Lassen for the Bay Cities Transportation Company of San Francisco, California, a subsidiary of the Crowley Maritime Corporation of San Francisco, California.

Operations of the Bay Cities Transportation Company were eventually merged into those of the Crowley Maritime Corporation. Where the tug retained her name.

The tug was later acquired by the Shaver Transportation Company of Portland, Oregon. Where she retained her name.


  • Vessel Name: LASSEN
  • USCG Doc. No.: 562754
  • Vessel Service: TOWING VESSEL
  • IMO Number: 8652964
  • Trade Indicator: Coastwise Unrestricted
  • Call Sign: WYP5109
  • Hull Material: STEEL
  • Ship Builder: COLBERG INC
  • Year Built: 1975
  • Length: 66
  • Hailing Port: PORTLAND, OR
  • Hull Depth: 11.1
  • Hull Breadth: 24
  • Gross Tonnage: 136
  • Net Tonnage: 92
  • Owner:
    SHAVER TRANSPORTATION COMPANY
    4900 NW FRONT STREET PO BOX 10324
    PORTLAND, OR 97296
  • Previous Vessel Owners:
    Bay Cities Transportation Company, Crowley Maritime Corporation