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ALMA S.
Photo by: Captain Ted

Built in 2006, by Main Iron Works Incorporated of Houma, Louisiana (hull #424) as the Alma S. for the Bisso Towboat Company Incorporated of Luling, Louisiana.

She was the second tractor tug constructed for the Bisso Towboat Company Incorporated by Main Iron Works. Named for the Bisso Towboat Company's President Scott Slatten's mother, Alma Slatten.

Powered by two, Caterpillar 3516C diesel engines. With two, Ulstein Aquamaster US205 MK2 z drives. Outfitted with 90.6(in) by 82.4(in) pitch, four bladed, stainless steel propellers. Set in stainless steel nozzles, for a rated 4,000 horsepower.

Her electrical service is provided by two 99kW Marathon generators. Driven by John Deere diesel engines. The tug's capacities are 30,163 gallons of diesel fuel, 1,826 gallons of lube and hydraulic oil. As well as, 10,938 gallons of potable water.

Her deck equipment consists of a Market DYSF42 hydraulic bow winch. Outfitted with 500(ft) of 8(in) Saturn 12 line.


  • Vessel Name: ALMA S.
  • USCG Doc. No.: 1183967
  • Vessel Service: TOWING VESSEL
  • IMO Number: 9349136
  • Trade Indicator: Coastwise, Unrestricted
  • Call Sign: WDD2002
  • Hull Material: STEEL
  • Hull Number: 424
  • Ship Builder: MAIN IRON WORKS
  • Year Built: 2006
  • Length: 96
  • Hailing Port: NEW ORLEANS, LA.
  • Hull Depth: 16.5
  • Hull Breadth: 38
  • Gross Tonnage: 195
  • Net Tonnage: 132
  • Previous Vessel Owners:
    BISSO TOWBOAT COMPANY INC.