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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.

    Sargo Class Submarine
    Keel Laid 20 June 1938 - Launched 25 May 1939

    Commissioned 27 November 1939
    Heavily damaged by Japanese aerial bombardment,
            10 December 1941 at Cavite Navy Yard, PI
    4 of her crew were lost
    Destroyed by explosives (Scuttled) 25 December 1941

    Struck from Naval Register (Date unknown)

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 Sealion SS-195 Covers Page 1    (1938-1940)



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

Thumbnail Link
Postmark Image
Thumbnail Link
Cover Image

Post Office Established 27 November 1939 - Disestablished 10 December 1942


Locy Type



First Day in Commission. Add-on Cachet by Alton (Budd) M. Arrington


Locy Type
FDC 9v


First Day in Commission. Rubber stamp text cachet. From the Adam Francis collection.


Locy Type
FDC 9x


First Day in Commission. Unlisted in USCS Postmark Catalog, 5th edition.


Locy Type
3 (A-BTT)




Shakedown Cruise. Cachet by Glen Osborn and the Argonauts Crew No. 24, ANCS


Locy Type
3 (A-BTT)



Unknown cachetmaker


Locy Type
3 (A-BTT)



Cachet by the Sibley's Dept. Store (Hobby Shop). From the Adam Francis collection.


Other Information

NAMESAKE - Named for the sea lion, any of several large, eared seals native to the Pacific.

Two ships of the US Navy have borne the name SEALION - USS Sealion SS-195 and USS Sealion SS-315.

The ships sponsor was Mrs. Claude C. Bloch.



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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