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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.

    Casa Grande Class Dock Landing Ship
    Keel Laid October 16 1944 - Launched January 21 1945

    Commissioned June 8 1945 - Decommissioned August 18 1947
    Laid up in Pacific Reserve Fleet, San Diego Group
    Recommissioned September 15 1950 - Decommissioned January 26 1970
    Laid up September 15 1971 in National Defense Reserve Fleet Suisun Bay, CA

    Struck from Naval Register October 15 1976
    Grounded August 21 1988 on San Miguel Island while being used as a target
    Raised towed to sea and scuttled

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     (1950-62)



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

Date From
Date To
Thumbnail Link To
Postmark Image
Thumbnail Link To
Cover Image

1st Commissioning June 8 1945 to August 18 1947


Locy Type




Locy Type
15863 Branch



2nd Commissioning September 15 1950 to January 26 1970


Locy Type


First Day Postal Service


Locy Type
FDPS 9efu


First Day Postal Service


Locy Type




Locy Type
2tnu (USS)




Locy Type




Other Information

TORTUGA earned 5 battle stars for Korean War service and 7 campaign stars for Vietnam War service

Awards, Citations and Campaign Ribbons...
Navy Unit Commendation - China Service Medal (extended) - American Campaign Medal - Asiatic-Pacific Campaign Medal - World War II Victory Medal - Navy Occupation Service Medal (with Asia clasp) - National Defense Service Medal (2) - Korean Service Medal (5) - Armed Forces Expeditionary Medal (Vietnam) - Vietnam Service Medal (7) - Republic of Vietnam Gallantry Cross Unit Citation (6) - United Nations Service Medal - Republic of Vietnam Campaign Medal - Republic of Korea War Service Medal (retroactive)

NAMESAKE - The Dry Tortugas Islands off Florida



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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