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SIKU
Photo by: Crowley Marine Services Incorporated

Built in 1995, by McDermott Shipyard Incorporated of Amelia, Louisiana (hull #298) as the Siku for Crowley Marine Services of San Francisco, California.

She was the first Siku class tug constructed for Crowley Marine Services Incorporated by McDermott Shipyard Incorporated.

The Siku class tugs were designed for utilization with oil barges in the coastwise, and river trades of Western Alaska. Their stern configuration shrouds the triple screw propellers in tunnels. Enabling these tugs to work at very shallow drafts.

Powered by two, Caterpillar 3412 diesel engines. With Twin Disc MG-540 reduction gears, at a ratio of 6.18:1. Turning two, five bladed, stainless steel, fixed pitch propellers. She is a twin screw, square bow push boat. Rated at 1,000 horsepower.

Her electrical service is provided by two, Caterpillar 3304 generator sets. The tug's capacities are 40,000 gallons of fuel, 700 gallons of lube oil, and 2,800 gallons of water.

The towing equipment consists of a Markey TSY-24, single drum, towing winch. Outfitted with 1,700(ft) of 1.5(in) towing wire. The tug is also equipped with a tenant drum, outfitted with 500(ft) of 1 3/8(in) wire rope.


  • Vessel Name: SIKU
  • USCG Doc. No.: 1029298
  • Vessel Service: TOWING VESSEL
  • IMO Number: 9107837
  • Trade Indicator: Coastwise Unrestricted, Registry
  • Call Sign: WCQ6174
  • Hull Material: STEEL
  • Hull Number: 298
  • Ship Builder: MCDERMOTT INCORPORATED
  • Year Built: 1995
  • Length: 81.8
  • Hailing Port: SAN FRANCISCO, CA.
  • Hull Depth: 12
  • Hull Breadth: 28.5
  • Gross Tonnage: 117
  • Net Tonnage: 80
  • Owner:
    CROWLEY MARINE SERVICES INC
    1102 SW MASSACHUSETTS ST
    SEATTLE, WA 98134
  • Previous Vessel Owners:
    CROWLEY MARINE SERVICES INC, CROWLEY MARINE SERVICES INC, CROWLEY MARINE SERVICES INC, CROWLEY MARINE SERVICES INC, CROWLEY MARINE SERVICES INC, CROWLEY MARINE SERVICES INC