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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Fox - King - Zebra

YMS-377 served the Navies of the United States and Norway.

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 6 April 1943 by the Greenport Basin and Construction Co., Greenport, NY
  • Launched 29 May 1943
  • Completed 27 September 1943 and commissioned USS YMS-380
  • Transferred to Norway 22 March 1945 reclassified NYMS-380 and later named Vorma (M 321)
  • Returned to U.S. custody 7 June 1948 (on paper); transferred to the State Department, Foreign Liquidation Commission and sold to Norway the same day
  • Struck from the Naval Register 12 August 1948
  • Struck from the Norwegian Navy list in 1959
  • Fate unknown.


  • Displacement 245 t.
  • Length 136'
  • Beam 22' 9"
  • Draft 6' 3"
  • Speed 14.5 kts.
  • Complement 50
  • Armament: One 3"/50 duel purpose mount, two 20mm mounts, two depth charge projectors and two depth charge tracks
  • Propulsion: Two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    YMS-380 276k From the collection of crewmember George Meier Jim Meier
    YMS-305/380/406 149k YMS-305, YMS-406 and YMS-380 in a French port sometime after D-Day George Meier

    There is no DANFS history currently available for YMS-380
    Additional Resources and Web Sites of Interest
    Naval Minewarfare Association
    Association of Minemen
    Back To The Main Photo Index Back To the Mine Warfare Ship Photo Index Back to the Auxiliary Motor Minesweeper (YMS) Photo Index

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    This page created and maintained by Joseph M. Radigan
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