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Built in 1945 by Everett-Pacific Shipbuilding of Everett, Washington as YTL-561 for the United States Navy.

In 1946, she was acquired by the General Construction Company of Seattle, Washington. Where the tug was renamed as the Ruby X.

In 1973, the tug was acquired by Pioneer Towing Company Incorporated of Kenmore, Washington. Where she was renamed as the Pi Ken.

The tug was later acquired by Island Tug and Barge of Seattle, Washington, where she was renamed as Helen S.

In 2007 she was acquired by Stephen Tate of Suquamish, Washington, where the tug's name was returned to Ruby X.

In 2010, the tug was again acquired by Island Tug and Barge of Seattle, Washington, where her name reverted to Helen S.

In 2015 she was acquired by Northwest Marine Equipment Leasing of Anacortes, Washington, where the tug retained its name.

  • Vessel Name: YTL-561
  • USCG Doc. No.: 249861
  • Vessel Service: INDUSTRIAL VESSEL
  • Trade Indicator: Coastwise Unrestricted, Registry
  • Call Sign: WB2248
  • Hull Material: STEEL
  • Year Built: 1945
  • Length: 61.3
  • Hailing Port: ANACORTES, WA
  • Hull Depth: 6.1
  • Hull Breadth: 17.1
  • Gross Tonnage: 46
  • Net Tonnage: 20
  • Owner:
    2310 BARON PL
  • Previous Vessel Names:
    YTL-561, Ruby X, Pi Ken, Helen S, Ruby S, Helen S
  • Previous Vessel Owners:
    United States Navy, General Construction Company, Pioneer Towing Co Inc, Island Tug and Barge, Stephen M Tate, Island Tug and Barge, Northwest Marine Equipment Leasing