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NavSource Online: Mine Warfare Vessel Photo Archive

Jackdaw (MSC[O] 21)
ex-AMS-21
ex-YMS-373



Call sign:
November - Delta - Alpha - Xray


Jackdaw served the Navies of the United States and Brazil
YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 28 December 1942 by Weaver Shipyards, Orange, TX
  • Launched 29 January 1944
  • Completed 28 April 1944
  • Commissioned USS YMS-373, 29 April 1944
    Naval Vessel Register of 1 January 1949 lists plan for decommissioning and placing in reserve at San Diego, CA as February 1947
  • Named Jackdaw and reclassified as a Motor Minesweeper, AMS-21, 18 February 1947
  • Reclassified as a Coastal Minesweeper (Old), MSC(O)-21, 7 February 1955
  • Struck from the Naval Register 1 January 1960
  • Transferred to Brazil 18 January 1960 and renamed Jurva (M 13)
  • Struck from the Brazilian Navy list in 1969
  • Fate unknown.

    Specifications:

  • Displacement 270 t.
  • Length 136'
  • Beam 24' 6"
  • Draft 8'
  • Speed 15 kts.
  • Complement 32
  • Armament: One 3"/50 dual purpose gun mount, two 20mm mounts and two depth charge projectors
    1947 - One 40mm mount and two twin .50 cal. machine guns
  • 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
    USS YMS-373
    YMS-373 172k 16 May 1944
    Gulf of Mexico
    Photographed from a ZP-22 blimp based at NAS Houma, LA
    National Archives photos 80-G-271210 and 80-G-271211    		 Tracy White
    YMS-373 251k
    YMS-373 134k c. 1945
    San Francisco Bay    		 Brian Cleveland
    YMS-373 34k Otto R. Cleveland, crew member
    USS Jackdaw (AMS 21)
    YMS-373 378k 16 April 1951
    Off Long Beach, CA
    U.S. Navy photo NH 93271    		 Naval History and Heritage Command
    Jurva (M 13)
    YMS-373 243k c. 1970
    Brazilian Navy photo    		 Robert Hurst
    Commanding Officers
    01LT D. Ditzler, USN1950 - January 1952
    02LT T. J. Murphy, USNJanuary 1952 - December 1952
    03LT John Rives Crumpton, Jr., USN - USNA Class of 1948-BDecember 1952 - 1954
    Courtesy of Wolfgang Hechler and Ron Reeves
    Dictionary of American Naval Fighting Ships History:

    Jackdaw

    A common crow-like bird, easy to tame, that is noted for pilfering small articles.

    YMS-373, commissioned 29 April 1944 was reclassified AMS-21 and given the name Jackdaw 17 February 1947. Struck from the Navy List 1 January 1960 and transferred to Brazil as Jurva (M 13) in January 1963.

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