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NavSource Online:
Motor Gunboat/Patrol Gunboat Photo Archive


Call sign:
Nan - William - Queen - Oboe


SC-497 Class Submarine Chaser/PGM-1 Class Motor Gunboat:

  • Laid down 29 November 1941 by the Peterson Boat Works, Sturgeon Bay, WI
  • Launched 27 June 1942
  • Commissioned USS PC-644, 16 October 1942
  • Reclassified USS SC-644 in April 1943
  • Converted to a Motor Gunboat, PGM-1, 10 December 1943
  • Decommissioned 17 January 1946
  • Struck from the Naval Register 25 February 1946
  • Transferred to the State Department, Foreign Liquidations Commission 20 May 1947
  • Fate unknown.


  • Displacement 148 t.
  • Length 110' 10"
  • Beam 17'
  • Draft 6' 6"
  • Speed 21 kts.
  • Complement 28
  • Armament: One 40mm gun mount, two .50 cal. machine guns, two depth charge projector "Y Gun," and two depth charge tracks
  • Propulsion: Two 1,540bhp General Motors (Electro-Motive Div.) 16-184A diesel engines, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    PGM-1 88k Historical Collections of the Great Lakes

    Commanding Officers
    01LT Phillip D. Holden, USNR16 October 1942
    02LTJG G. L. Smith, USNRApril 1943
    03LTJG George E. Cornell, USNROctober 1943
    04LTJG Floyd Wallace, Jr., USNRMarch 1945 - 17 January 1946
    Courtesy Joe Radigan and Wolfgang Hechler

    There is no DANFS history available for PGM-1
    Additional Resources and Web Sites of Interest
    Patrol Craft Sailors Association
    Back To The Main Photo Index Back To the Patrol Craft/Gunboat/Submarine Chaser Ship Type Index Back to the 110' Submarine Chaser (SC) Photo Index Back to the Motor Gunboat (PGM) Photo Index

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    This page created by Joseph M. Radigan and maintained by Tom Bateman
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