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NavSource Online: Service Ship Photo Archive

Mizar (RV-1 / YTM-759) (1962-????)
LT 2077 (1954-1962)

US Army Large Tug LT 2077 was transferred to the US Navy, named Mizar (RV-1)
Awards, Citations and Campaign Ribbons

National Defense Service Medal

US Army Large Tug
  • Built by National Steel and Shipbuilding Co., San Diego, CA (YN 224)
  • Laid down, date unknown
  • Launched, date unknown
  • Delivered to the US Army as LT 2077, 1954
  • Acquired by the US Navy and placed in service as Research Vessel Mizar (RV-1), 1962
  • Redesignated Harbor District Tug, Medium YTM-759, date unknown
  • Mizar was assigned to the Naval Ordinance Testing Station, Long Beach, CA
  • Used as mother ship for remote controlled submersible CURV (Cable-Controlled Underwater Recovery Vehicle)
  • Reclassified Miscellaneous Unclassified IX-505 and name withdrawn, 01 November 1976
  • Placed out of service and struck from the Naval Register, date unknown
  • Final Disposition, disposed of, sold by Defense Reutilization and Marketing Service (DRMS) for reuse/conversion, April 1979
  • Propulsion system converted to a twin screw configuration by Marine Power and Equipment of Seattle, WA in 1981
  • Sold to Clearwater Marine Towing of Pennsylvania, renamed Marine Explorer (ON 645691), 1984
  • Sold to Immel's Marine, Inc. of St. Thomas, U.S.Virgin Islands, renamed Courageous, 2001
  • Sold to Cape Towing, renamed Cape May, 2007
    Displacement 310 tons (fl)
    Length 107'
    Beam 27'
    Draft 12'
    Speed 12 knots
    Complement 16
    Armament none
    As Built - diesel, single screw
    Commercial Service - two GM16V149TI diesel engines, twin screws 2,600BHP
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    Size Image Description Source
    Mizar (YTM-759)
    YTM-759 60k Mizar (YTM-759) underway, date and place unknown. Courtesy National Association of Fleet Tug Sailors - Contributed by Ed Fulcher
    YTM-759 102k IX-505 moored at Long Beach, 18 February 1975. Photo copyright George Schneider. George Schneider
    Commercial Service
    YTM-759 51k Ex-Mizar (YTM-759) in commercial service as Courageous, moored, date and place unknown. Courtesy Marcon International

    There is no DANFS history for Mizar (YTM-759) available at NavSource
    Crew Contact And Reunion Information
    U.S. Navy Memorial Foundation - Navy Log

    Additional Resources and Web Sites of Interest
    National Association of Fleet Tug Sailors

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    This page was created by Gary P. Priolo and is maintained by David L. Wright
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    Last Updated 01 March 2019