Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online: Mine Warfare Vessel Photo Archive

Cormorant (AT[O] 133)

Call sign:
Nan - Yoke - Zebra - Baker

ex-Cormorant (AT 133)
ex-Cormorant (AM 40)

Call sign (1939):
Negat - Int - King - Victor

ex-Cormorant (Minesweeper No. 40)

Call sign (1919):
George - Boy - Cast - Mike

Lapwing Class Minesweeper:

  • Laid down 4 September 1918 by the Todd Shipbuilding Corp., New York, NY
  • Launched 5 February 1919
  • Commissioned USS Cormorant, Minesweeper No. 40, 15 May 1919
  • Designated AM-40, 17 July 1920
  • Reclassified as a Fleet Tug, AT-133, 1 June 1942
  • Reclassified as a Fleet Tug (Old), AT(O)-133, 15 May 1944
  • Decommissioned 29 March 1946 at San Pedro, CA
  • Sold 8 January 1947
    Naval Vessel Register of 1 January 1949 lists sold in March 1947
  • Fate unknown.


  • Displacement 950 t.
    1944 - 1,350 t.
  • Length 187' 10"
  • Beam 35' 6"
  • Draft 9' 9"
    1944 - 13' 1"
  • Speed 14 kts.
    1944 - 11.5 kts.
  • Complement 72
    1944 - 75
  • Armament: Two 3"/50 mounts
    1944 - Two 3"/50 dual purpose mounts
  • Propulsion: Two Babcock and Wilcox boilers, one triple expansion reciprocating steam engine, one shaft
    1944 - Two 200psi saturated steam Babcock and Wilcox header boilers, one 1,400shp Harlan and Hollingsworth vertical triple expansion reciprocating steam engine.

    Click on thumbnail
    for full size image
    Size Image Description Source
    USS Cormorant (Minesweeper No. 40)
    Cormorant 29k

    Cormorant - A genus of web-footed sea birds

    Tommy Trampp
    Photo added 9 March 2020
    Cormorant 290k Photo from "Sweeping the North Sea Mine Barrage" by the U.S. Navy North Sea Minesweeping Detachment Joe Radigan
    USS Cormorant (AM 40)
    Cormorant 148k Starboard broadside view
    Courtesy of Donald M. McPherson, 1974
    Naval History and Heritage Command photo NH 79074
    Mike Green
    Cormorant 30k 12 February 1942 Hyperwar U.S. Navy in WWII
    USS Cormorant (AT[O] 133)
    Cormorant 97k 20 April 1945
    Near the Norfolk Navy Yard, Portsmouth, VA
    National Archives photo19-N-98014
    Mike Green

    Commanding Officers
    01LT John R. McKean, USN - Awarded the Navy Cross (1919)15 May 1919
    02LT Theo Dwight Westfall, USN5 July 1921
    03LT William Griggs Dow, USN1 July 1927
    04LT Atherton MacOndray, Jr., USN - Retired as Rear Admiral1934
    05LT Henry Plander, USN1936
    06LCDR Kenneth Oscar Ekelund, Sr., USN1939
    07LCDR P. S. Reynolds, USN1940 - 1942
    08LCDR Edmund Ernest Garcia, USN - USNA Class of 1927
    Awarded the Bronze Star with Combat "V" - Retired as Rear Admiral
    February 1942 - June 1943
    09LT William Thomas Davern, USN1 October 1944 - 29 March 1946
    Courtesy Wolfgang Hechler, Ron Reeves and Joe Radigan

    View the Cormorant (AM-40)
    DANFS history entry located on the Haze Gray & Underway website
    Additional Resources and Web Sites of Interest
    National Association of Fleet Tug Sailors

    Back to the Main Photo Index Back to the Mine Warfare Ship Photo Index Back to the Minesweeper (AM) Photo Index Back to the Auxiliary Ship Photo Index Back to the Fleet Tug (AT) Photo IndexBack to the Fleet Tug (Old) - (ATO) Photo Index

    Comments, Suggestions, E-mail Webmaster

    This page created and maintained by Joseph M. Radigan
    All pages copyright NavSource Naval History