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NavSource Online: Mine Warfare Vessel Photo Archive

Cormorant (AT[O] 133)



Call sign:
Nan - Yoke - Zebra - Baker

ex-AT-133
ex-AM-40
ex-Minesweeper No. 40


Lapwing Class Minesweeper: Laid down 4 September 1918 by the Todd Shipbuilding Corp., New York, NY; Launched, 5 February 1919; Commissioned USS Coromorant, 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. Fate unknown.

AM-40 Specifications: Displacement 950 t.; Length 187' 10"; Beam 35' 6"; Draft 9' 9"; Speed 14 kts; Complement 72; Armament two 3"/50; Propulsion triple expansion reciprocating steam engine, two Babcock and Wilcox boilers, one shaft.

AT(O) 133 Specifications: Displacement 1,350 t.; Length 187' 10"; Beam 35' 6"; Draft 13' 1"; Speed 11.5 kts.; Complement 75; Armament two 3"/50 dual purpose mounts; Propulsion two 200psi saturated steam Babcock and Wilcox header boilers, one 1,400shp Harlan and Hollingsworth vertical triple expansion reciprocating steam engine, one shaft.


Click on thumbnail
for full size image
Size Image Description Source
Cormorant 30k 12 February 1942 Hyperwar U.S. Navy in WWII

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


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