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Ship Name and Designation History

This section lists the names and designations that the ship had during its lifetime. The list is in chronological order.

    YMS-1 Class Auxiliary Motor Minesweeper
    Keel Laid 17 November 1942 - Launched 27 November 1943

  1. USS YMS-371
    Completed and commissioned 29 February 1944
    Decommissioned 1 June 1946

    Named and reclassified Motor Minesweeper (AMS) 18 February 1947
    Assigned duty at San Francisco, CA as a Naval Reserve training vessel in November 1948

    Reclassified Coastal Minesweeper (Old), MSC(O) 7 February 1955
    Decommissioned September 1957

    Struck from the Naval Register 1 November 1959
    Sold in 1961 to C. D. Anderson of San Antonio, TX for use as a tugboat and renamed Los Buscaderos
    Sold in 1963 to the San Juan Towing and Salvage Corp. of Guaynabo, PR for use as a freighter and renamed Peacock
    Out of documentation in November 1976
    Believed to have sunk in 1979 off Scorpion Anchorage, Santa Cruz Island, CA.

Naval Covers

This section lists active links to the pages displaying covers associated with the ship. There should be a separate set of pages for each name of the ship (for example, Bushnell AG-32 / Sumner AGS-5 are different names for the same ship so there should be one set of pages for Bushnell and one set for Sumner). Covers should be presented in chronological order (or as best as can be determined).

Since a ship may have many covers, they may be split among many pages so it doesn't take forever for the pages to load. Each page link should be accompanied by a date range for covers on that page.

  1. USS Hornbill MSC(O)-19 Covers Page 1     (DATE RANGE)



This section lists examples of the postmarks used by the ship. There should be a separate set of postmarks for each name and/or commissioning period. Within each set, the postmarks should be listed in order of their classification type. If more than one postmark has the same classification, then they should be further sorted by date of earliest known usage.

A postmark should not be included unless accompanied by a close-up image and/or an image of a cover showing that postmark. Date ranges MUST be based ONLY ON COVERS IN THE MUSEUM and are expected to change as more covers are added.
>>> If you have a better example for any of the postmarks, please feel free to replace the existing example.


Postmark Type
Killer Bar Text

Thumbnail Link
Postmark Image
Thumbnail Link
Cover Image


Machine Postmark

Boston, MA
Charlestown/Station/NS 29


JohnGermann Hornbill MSC(O)19 19571010 1 Front.jpg

The ship had no postal facilities.


Other Information

USS HORNBILL earned the Asiatic-Pacific Campaign Medal w/ 2 Battle stars and the World War II Victory Medal during her Naval career.

NAMESAKE - A large bulky bird, noted for the enormous size of the bill. Their flight is slow and heavy, and their plumage is chiefly black and white.

Two ships of the US Navy have borne the name HORNBILL - USS Hornbill AMc-13 and USS Hornbill MSC(O)-19.



If you have images or information to add to this page, then either contact the Curator or edit this page yourself and add it. See Editing Ship Pages for detailed information on editing this page.


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