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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.

    Dash Class Minesweeper
    Keel Laid 23 April 1952 - Launched 5 November 1953

  2. Commissioned 8 November 1954

  4. Reclassified Ocean Minesweeper (MSO) 7 February 1955
    Decommissioned 1 October 1982

    Struck from Naval Register 1 October 1982
    Sold 26 January 1984 for scrap
Dominant MSO431 Crest.jpg

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 incarnation of the ship (ie, for each entry in the "Ship Name and Designation History" section). 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 Dominant MSO-431 Covers Page 1    (1957-82)



This section lists examples of the postmarks used by the ship. There should be a separate set of postmarks for each incarnation of the ship (ie, for each entry in the "Ship Name and Designation History" section). 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 To
Postmark Image
Thumbnail Link To
Cover Image


Locy Type
2t (n+u)


GregCiesielski Dominant MSO431 19580817 1 Postmark.jpg
GregCiesielski Dominant MSO431 19580817 1 Front.jpg

Cacheted. From the Bob Govern collection.


Other Information

NAMESAKE - Ruling or controlling.

The ships sponsor was Mrs. B. S. Hiltebrant.

Two ships of the US Navy have borne the name DOMINANT - USS Dominant AMc-76 and USS Dominant AM-431/MSO-431



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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