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MARK SHELL

Built in 2009, by Marine Builders Incorporated of Utica, Indiana (hull #258) as the Helen Merrill for for SCF Waxler Transportation Incorporated of St. Rose, Louisiana.

In 2016, the tug was acquired by the Kirby Corporation of Channelview, Texas. Where she was renamed as the Mark Shell.

Powered by two, Cummins KTA50-M2 diesel engines. With Haley reduction gears at a ratio of 6.864:1. She is a twin screw towboat, rated at 3,200 horsepower.


  • Vessel Name: MARK SHELL
  • USCG Doc. No.: 1224501
  • Vessel Service: TOWING VESSEL
  • Trade Indicator: Coastwise Unrestricted
  • Call Sign: WDI7434
  • Hull Material: STEEL
  • Hull Number: 258
  • Ship Builder: Marine Builders Inc.
  • Year Built: 2009
  • Length: 95
  • Hailing Port: NEW YORK, NY.
  • Hull Depth: 10
  • Hull Breadth: 35
  • Gross Tonnage: 313
  • Net Tonnage: 212
  • Previous Vessel Names:
    HELEN MERRILL
  • Previous Vessel Owners:
    SEACOR OFFSHORE BARGES LLC, SCF BARGE LINE LLC, KIRBY INLAND MARINE LP