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NavSource Online:
Submarine Chaser Photo Archive


Call sign:
Nan - William - Peter- Charlie


SC-497 Class Submarine Chaser:

  • Laid down 24 December 1941 by the Vinyard Shipbuilding Co., Milford, DE
  • Launched 10 June 1942
  • Commissioned USS PC-637, 31 July 1942
  • Reclassified SC-637 in April 1943
  • Struck from the Naval Register 25 February 1946
  • Transferred to the Foreign Liquidation Commission 27 October 1948
  • Fate unknown.


  • Displacement 148 t.
  • Length 110' 10"
  • Beam 17'
  • Draft 6' 6"
  • Speed 15.6 kts.
  • Complement 28
  • Armament: One 40mm gun 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-637 437k 1 October 1942
    Navy Yard Charleston, SC
    In dry dock with YMS-9, YMS-10 and YMS-49
    Original photo: Robert Hall
    Replacement photo: Gary Toma
    Replacement added 24 July 2020
    SC-749 110k c. 1944
    Milne Bay, New Guinea
    SC-731, SC-749, SC-648 and SC-637 nested together alongside their tender
    Alan Ross

    There is no DANFS history available for SC-637
    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 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
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