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NavSource Online: Mine Warfare Vessel Photo Archive

Marin (YNT 21)

Call sign:
Nan - Baker - Charlie - William

ex-Sparrow (AMc 31)

Coastal Minesweeper:

  • Built in 1929 as Pacific by the Harbor Boat Works, San Pedro, CA
  • Acquired by the Navy 14 November 1940 at San Diego, CA
  • Renamed Sparrow and designated as a Coastal Minesweeper, AMc-31, 29 November 1940
  • Reclassified as a Harbor Tug 12 December 1940, and the name Sparrow canceled
  • Named Marin and reclassified as a Net Tender, YN-53, 5 February 1941
    Naval Vessel Register of 1 January 1949 lists reclassification to YN-53 as December 1940
  • Placed in service 8 March 1941
  • Reclassified as a District Net Tender, YNT-21, 8 April 1942
    Naval Vessel Register of 1 January 1949 lists reclassification to YNT-21 as May 1942
  • Placed out of service 18 June 1946
  • Struck from the Navy Register 19 July 1946
  • Transferred to the Maritime Commission for disposal 4 March 1947
  • Fate unknown.


  • Displacement 112 t.
  • Length 83'
  • Beam 18' 7"
  • Draft 9'
  • Speed 11 kts.
  • Propulsion: One diesel engine, one shaft.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Sparrow 74k Seen here as Marin (YN 53) Jon Burdett
    Sparrow 81k c. April 1941
    After her conversion by Al Larson Boat Shop, San Pedro, California
    Naval History and Heritage Command photo NH 78222
    Mike Green

    Dictionary of American Naval Fighting Ships History:


    Any of several small dull singing birds of the genus passer of the family Poseidae and related to the finches.

    The purse seiner Pacific was acquired by the Navy on 14 November 1940 at San Diego, Calif. Fifteen days later, she was assigned the name Sparrow, and designated a coastal minesweeper, AMC-31. On 12 December 1940, she was reclassified as a harbor tug, and the name Sparrow was cancelled. On 5 February 1941, she was named Marin, and redesignated a net tender, YN-53.



    An Indian chief of the Licatiut Tribe in California.

    [The first] Marin (YNT-21) was built as Pacific by Harbor Boat Works, San Pedro, Calif., in 1929; purchased by the Navy 14 November 1940 from Sam Bracco & Associates; converted and placed in service 8 March 1941 at San Diego, Calif., as Marin (YN-53), Lt. (jg.) V. H. Craig in command.

    Completing sea trials, Marin was taken in tow by Sabine [AO 25] and entered Pearl Harbor 22 April 1941. She tended nets in the 14th Naval District throughout World War II. A classification change redesignated Marin to
    YNT-21 on 8 April 1942. Returned to San Diego, she was placed out of service 18 June 1946; struck from the Navy list 19 July; and transferred to the Maritime Commission 4 March 1947 for disposal.

    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 Coastal Minesweeper (AMc) Photo Index Back to the Yard and District Craft Photo Index Back to the Net Tender (YN) Photo Index Back to the District Net Tender (YNt) Photo Index

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