MERCURY T-AGM 21

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.

Mission Buenaventura Class Fleet Oiler / Vanguard Class Missile Range Instrumentation Ship Laid down July 30 1943 - Launched October 14 1943 Delivered January 31 1944 upon completion, for charter to Deconhill Shipping Co. Transferred to Maritime Commission April 9 1946 Acquired by U.S. Navy November 21 1947 USS MISSION SAN JUAN AO-126 Designated and assigned to the Naval Transportation Service (NTS) USNS MISSION SAN JUAN T-AO-126 Transferred to the Military Sea Transportation Service (MSTS) and placed in service Placed Out of Service February 12 1958 Struck from Naval Register February 12 1958 Laid up in National Defense Reserve Fleet, Beaumont, TX Reacquired by U.S. Navy October 28 1964 Converted to Missile Range Instrumentation Ship (AGM) and renamed FLAGSTAFF T-AGM-21 April 8 1965 Renamed MERCURY September 1 1965 USNS MERCURY T-AGM-21 Placed In Service with Military Sea Transportation Service September 16 1965 Placed Out of Service October 29 1969 Laid up in National Defense Reserve Fleet Struck from Naval Register (date unknown) SS KOPAA (Commercial Service) Sold June 23 1970 to Matson Navigation Co. and renamed Sold October 1984 for scrap

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. USNS MERCURY T-AGM-21 Covers Page 1     (1969)

 

Postmarks

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	Postmark Date	Thumbnail Link To Postmark or Cover Image	Thumbnail Link To Cover Image

 

POSTMARKS

POSTMARK DATE

File:CLOSEUP IMAGE NAME

N/A

Note:

 

Other Information

USS MISSION SAN JUAN earned the National Defense Service Medal during her Naval career.

 

---

 

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.

 

---

Copyright 2024 Naval Cover Museum