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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.

    Balao Class Submarine
    Keel Laid July 14 1943 - Launched November 15 1943

  1. USS PLAICE SS-390
    Commissioned February 12 1944 - Decommissioned November 11 1947
    Reactivated May 18 1963 in preparation for transfer to Brazil

  2. BAHIA S-12 (Brazilian Naval Service)
    Transferred to Brazil September 7 1963
    Sold to Brazil 1972

    Struck from the Naval Register April 1 1973
    Sold 1978 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 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. Covers Page 1    (1943)



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
Postmark Image
Thumbnail Link To
Cover Image


USPO Machine

Kittery, Maine


Bunter Plaice SS 390 19431115 1 front.jpg
Bunter Plaice SS 390 19431115 1 cachet.jpg



Locy Type


JonBurdett plaice ss390 19440212.jpg
JonBurdett plaice ss390 19440212 cach.jpg







Other Information

PLAICE earned 6 Battle Stars (WWII)

Credited with sinking...
The 986-ton Japanese Auxiliary Gunboat HYAKAFUKU MARU, June 30 1944 off Chichi Jima
The 857-ton Japanese Auxiliary Netlayer KOGI MARU, July 5 1944 off Ototo Jima
The 420-ton Japanese Submarine Chaser CH-50, July 18 1944 off Chichi Jima
The 740-ton Japnese Corvette KAIBOKAN No.10, September 27 1944 Ryukyu Islands
Four small un-named Japanese vessels, May 13 1945 Kuril Islands

NAMESAKE - The various American flatfish, the summer flounder



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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