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DANIEL FOSS
Photo by: Kyle Stubbs

Built in 1977, by Main Iron Works Incorporated of Houma, Louisiana (hull #319) as the Mamo II for the Dillingham Tug and Barge Corporation of Honolulu, Hawaii. A subsidiary of the Dillingham Corporation of Honolulu, Hawaii.

In 1986, the tug was transferred to Dillingham Tug and Barge subsidiary, the Foss Maritime Company of Seattle, Washington. Where she was renamed as the Daniel Foss.

In 1987, the Foss Maritime Company, and its subsidiaries were acquired by Saltchuk Resources Incorporated of Seattle, Washington. Where the tug retained her name,

Powered by two, Caterpillar 3512 diesel engines. With Ulstein 900 H z drives, outfitted with Nautican, fixed pitch propellers. She is a twin screw tractor tug, rated at 3,300 horsepower.

Her electrical service is provided by two, 75kW generator sets. Driven by two, GM Detroit Diesel 6-71 diesel engines. The tug's capacities are 37,500 gallons of fuel, 300 gallons of hydraulic oil, 1,050 gallons of lube oil, and 2,100 gallons of water.

The towing equipment consists of a Markey DYSW 32-18, hawser winch. Outfitted with 425(ft) of 6(in) plasma line. A Markey DD4-71, TDSD-28, double drum, towing winch. Outfitted with 2,000(ft) of 1.75(in) towing wire on the primary drum. And, 600(ft) of 10(in) TQ-12 P.E. towing wire on the secondary drum. Driven by a dedicated GM Detroit Diesel 4-71 diesel engine.
(Kyle Stubbs, Captain Rick Wilson)


  • Vessel Name: DANIEL FOSS
  • USCG Doc. No.: 581354
  • Vessel Service: TOWING VESSEL
  • IMO Number: 7638454
  • Trade Indicator: Coastwise Unrestricted, Registry
  • Call Sign: WTS3171
  • Hull Material: STEEL
  • Hull Number: 319
  • Ship Builder: MAIN IRON WORKS INC
  • Year Built: 1977
  • Length: 94.7
  • Hailing Port: SEATTLE, WA.
  • Hull Depth: 15
  • Hull Breadth: 32
  • Gross Tonnage: 192
  • Net Tonnage: 130
  • Owner:
    FOSS MARITIME COMPANY
    1151 FAIRVIEW AVENUE NORTH
    SEATTLE, WA 98109
  • Previous Vessel Names:
    Mamo II
  • Previous Vessel Owners:
    Dillingham Tug and Barge Corp., FOSS MARITIME COMPANY