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NavSource Online:
Submarine Chaser Photo Archive


Call sign:
Nan - Fox - Able - Item

PC-570 served the Navies of the United States and Thailand

PC-461 Class Submarine Chaser:

  • Laid down 11 September 1941 by the Albina Engine and Machinery Works, Portland, OR
  • Launched 5 January 1942
  • Commissioned USS PC-570, 18 April 1942
  • Decommissioned in January 1947 at Astoria, Oregon and laid up in the Pacific Reserve Fleet Columbia River Group
  • Transferred in June 1953 to Thailand and named HTMS Longlom (PC 8)
  • Decommissioned 2 February 1994
  • Fate unknown.


  • Displacement 295 t.(lt), 450 t.(fl)
  • Length 173' 8"
  • Beam 23'
  • Draft 10' 10"
  • Speed 20.2 kts.
  • Complement 65
  • Armament: One 3"/50 dual purpose gun mount, one 40mm gun mount, three 20mm guns, two Mk20 Mousetrap rocket launchers, four depth charge projectors, two Mk32 MOD 3 single tube anti-submarine torpedos and two depth charge tracks
  • Propulsion: Two 1,440bhp Fairbanks Morse 38D8 1/8 diesel engines (Serial No. 832225 and 832226), Westinghouse single reduction gear, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    USS PC-570
    PC-570 82k . Joe Martin
    HTMS Longlom (PC 8)
    PC-570 112k 7 June 1953
    Still wearing her U.S. Navy hull number
    United Press photo
    Joe Martin
    PC-570 65k c. 1975 Robert Hurst

    There is no DANFS history available for PC-570
    Additional Resources and Web Sites of Interest
    Patrol Craft Sailors Association

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    This page created and maintained by Joseph M. Radigan
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