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NavSource Online:
Submarine Chaser Photo Archive


Call sign:
Nan - William - Sugar - Victor


SC-657 served the Navies of the United States and the Soviet Union.

SC-497 Class Submarine Chaser:

  • Laid down 20 December 1941 by Snow Shipyards, Inc., Rockland, ME
  • Launched 22 June 1942
  • Commissioned USS PC-657, 9 September 1942
  • Reclassified SC-657 in April 1943
  • Transferred to the Soviet Union 25 May 1945 and reclassified BO-307
  • Assigned to the Soviet Pacific Fleet 17 June 1945
  • Participated in the landing of the landing in Seisin (Chongjin), Japan 14 August 1945
  • Placed out of service 1 February 1954 and scrapped.


  • Displacement 92 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 Guns," 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
    SC-657 143k . Ron Titus

    There is no DANFS history available for SC-657
    Additional Resources and Web Sites of Interest
    Patrol Craft Sailors Association
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