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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.

    LST-542 Class Tank Landing Ship
    Keel Laid February 5 1944 - Launched April 22 1944

  1. USS LST-912
    Commissioned May 21 1944

    Named July 1 1955 - Decommissioned August 25 1955
    Recommissioned March 27 1963
    Ran aground December 30 1966 at Chu Lai, South Vietnam during a typhoon
    Decommissioned January 31 1967

    Demolished after several un-successful attempts to refloat
    Struck from Naval Register July 31 1967

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. 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






2nd Commissioning March 27 1963 to January 31 1967


USPO Machine Postmark

Norfolk, VA


JohnGermann Mahnomen County LST912 19640427 1 Front.jpg

The ship had no postal facilities.


Other Information

LST-912 / MAHNOMEN COUNTY earned the Combat Action Ribbon, the China Service Medal, the American Campaign Medal, the Asiatic-Pacific Campaign Medal w/ 4 Battle stars, the World War II Victory Medal, the Navy Occupation Service Medal w/ Asia clasp, the National Defense Service Medal w/ 1 bronze star, the Vietnam Service Medal w/ 2 Campaign stars, the Philippines Presidential Unit Citation Ribbon, the Philippines Liberation Medal w/ 2 bronze stars, the Republic of Vietnam Gallantry Cross Unit Citation Ribbon and the Republic of Vietnam Campaign Medal during her Naval career.

NAMESAKE - Mahnoman County, Minnesota.



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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