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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.

    Lapwing Class Minesweeper
    Keel Laid November 17 1917 - Launched June 12 1918

  1. USS PENGUIN Minesweeper No. 33
    Commissioned November 21 1918 - Decommissioned June 1 1922
    Designated (AM) July 17 1920, While in reserve

    Recommissioned October 13 1923
    SUNK (Scuttled) December 8 1941 by her crew in 200 fathoms at Agana Harbor, Guam to prevent capture by the Japanese


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 Penguin AM-33 Covers Page 1    (1928-41)



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

Date From
Date To
Thumbnail Link To
Close-Up Image
Thumbnail Link To
Full Cover Image

2nd Commissioning 1st Post Office Period May 23 1924 to April 30 1928


Locy Type
3s (B)


Posted after POD (1928-04-30)

2nd Commissioning 2nd Post Office Period October 27 1934 to December 7 1941


Locy Type
3s (AC-BBT)



Navy Day cachet by Richard Dumonte
Signed by T. M. Miller, Navy Mail Clerk


Locy Type



Christmas/New Year's Day cachet.


Locy Type



Independence Day
William F. Schlechter


Locy Type F

USCS Postmark
Catalog Illus. CD-Z1


Censored pre-wartime (WWII) use. Cachet by M. Fay Muridge


Locy Type SL


USS Penquin AM-33 straight line marking. Postmarked from Receiving Ship, Cavite Philippines.


Other Information

NAMESAKE - Any of various stout flightless marine birds of cool regions of the Southern Hemisphere, having flipperlike wings and webbed feet adapted for swimming and diving, and short scalelike feathers that are white in front and black on the back



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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