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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.

    Aggressive Class Minesweeper
    Keel Laid 21 May 1953
    Launched 4 June 1954 as AM-489
    Redesignated Ocean Minesweeper (MSO) 7 February 1955

    Commissioned 14 September 1955 - Decommissioned 29 April 1994

    Struck from Navy Register 29 April 1994

  2. ROCS YUNG KU M-1308 (Taiwanese Naval Service)
    Sold to Taiwan 8 September 1994 and renamed
    Fate unknown

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 Gallant MSO-489 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


USPO Slogan
Machine Cancel

Long Beach, Calif.




Machine Cancel

San Francisco, CA



Add-on cachet by Wolfgang Hechler


Other Information

NAMESAKE - Noble in bearing or spirit; brave; high-spirited; chivalrous; stately in appearance or action.

Two ships of the US Navy have borne the name GALLANT - USS Gallant PYc-29 and USS Gallant MSO-489.

The ships sponsor was Mrs. Walter Meserole.



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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