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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 9 October 1943 - Launched 1 June 1944

  1. USS YMS-422
    Completed and commissioned 27 September 1944

    Reclassified as Motor Minesweeper (AMS) and named 18 February 1947

    Reclassified as Coastal Minesweeper, Old (MSC(O) 7 February 1955
    Decommissioned 22 March 1955

    Transferred to the Japanese Maritime Self-Defense Force 22 March 1955 and renamed
    Reclassified (YTE)

    Sold for scrap 1 June 1969
    Struck from the Navy Register 15 June 1969

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 Osprey MSC(O)-28 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


Locy Type
13766 Branch


JohnGermann Osprey AMS28 19500213 1a Postmark.jpg

The ship had no postal facilities.


Other Information

NAMESAKE - A large hawk-like bird with a dark brown back and a white breast, found in most countries of the world.

Five ships of the US Navy have borne the name OSPREY - USS Osprey AM-29, USS Osprey AM-56, USS Osprey AM-406 a minesweeper cancelled in 1945, USS Osprey MSC(O)-28 and USS Osprey MHC-51.



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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