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NavSource Online:
Submarine Chaser Photo Archive


Call sign:
Nan - Able - William - Item


SC-497 Class Submarine Chaser:

  • Laid down 27 March 1941 by the Westergard Boat Works, Inc., Rockport, TX
  • Launched 4 September 1941
  • Commissioned PC-531, 27 May 1942
  • Reclassified SC-531 in April 1943
  • Visited Auckland, New Zealand 18 - 27 July 1944
  • Struck from the Naval Register 19 December 1945
  • Transferred to the Maritime Commission 27 February 1948
  • Fate unknown.


  • Displacement 148 t.
  • Length 110' 10"
  • Beam 17'
  • Draft 6' 6"
  • Speed 15.6 kts.
  • Complement 28
  • Armament: One 40mm mount, two .50 cal. machine guns, two depth charge projector "Y Guns," and two depth charge tracks
  • Propulsion: Two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    SC-497 161k Exploded view of SC-497 class Subchaser © 1997 Theodore R. Treadwell

    Commanding Officers
    ??LTJG Grant H. Wyhkuis, USNR1944 - 6 January 1945
    ??LTJG Jerome D. Gainer, D-V (S), USNR20 January 1945
    ??LTJG S. W. Crocker, USNRMay 1945
    ??LTJG Joseph S. King, D-V (S), USNR6 September 1945
    Courtesy of Bill Gonyo and Joe Radigan

    There is no DANFS history available for SC-531
    Additional Resources and Web Sites of Interest
    Patrol Craft Sailors Association
    SC-531 Website
    Back To The Main Photo Index Back to the Patrol Craft/Gunboat/Submarine Chaser Ship Index Back to the 110' Submarine Chaser (SC) Photo Index

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