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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 August 24 1953
    Launched January 3 1955 as Minesweeper AM-462
    Redesignated February 7 1955 as Ocean Minesweeper (MSO)

    Commissioned October 21 1955 - Decommissioned November 24 1970

    Struck from Naval Register November 1 1977
    Sold May 1 1978 to C. B. Herter of Hopewell, VA 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. 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 To
Postmark Image
Thumbnail Link To
Cover Image


Locy Type


JohnGermann Pinnacle MSO462 19630921 1a Postmark.jpg
JohnGermann Pinnacle MSO462 19630921 1 Front.jpg

The Pinnacle was one of the few ocean minesweepers that had postal facilities. The USS Skill, a sister ship, used the Pinnacle's post office to mail this cover.


Other Information

NAMESAKE - The highest



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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