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:
Submarine Chaser Photo Archive


Call sign:
Nan - Charlie - Mike - Charlie


SC-497 Class Submarine Chaser:

  • Laid down 20 August 1942 by the George W. Kneass Co., San Francisco, CA
  • Launched 9 December 1942
  • Commissioned USS PC-990, 10 March 1943
  • Reclassified SC-990 in April 1943
  • Participated in the invasion of the Gilbert Islands in November 1943
  • Decommissioned in December 1945
  • Struck from the Naval Register 3 January 1946
  • Transferred to the Maritime Commission 9 March 1948
  • Acquired in 1948 by the West Coast Steamship Co. of Los Angeles, CA for use as a tug boat and named Del Norte
  • Acquired in 1950 by Arthur D. Penberthy of Los Angeles
  • Acquired in 1952 by Donald A. Bervin of Vancouver, British Columbia, Canada and renamed Gloria
  • Acquired in 1953 by the Tulloch Fisheries, Ltd. of Vancouver, renamed Randy and chartered to Dola Towing for Squamish [British Columbia] Pacific Great Eastern Rail barges
  • Acquired in 1970 by Francis Millerd and Co., Ltd. of Vancouver and renamed G. N. Carrier
  • Acquired in 1987 by Jerome L. Davis of West Vancouver
  • 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 "K 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-990 82k Randy Joe Radigan

    Commanding Officers
    01LTJG Daniel J. Callaghan, Jr., USNR10 March 1943
    02LT Theodore E. Olsen, USNRNovember 1943
    03ENS A. S. Tarlow, USNR1945
    Courtesy of Joe Radigan

    There is no DANFS history available for SC-990
    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

    Comments, Suggestions, E-mail Webmaster

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