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NavSource Online:
Submarine Chaser Photo Archive


PC-604 served the Navies of the United States and Brazil

PC-461 Class Submarine Chaser:

  • Laid down 16 February 1942 by the Luders Marine Construction Co., Stamford, CT
  • Launched 24 October 1942
  • Commissioned USS PC-604, 9 March 1943
  • Decommissioned 11 June 1943, transferred to Brazil and named Guaíba (CS 3)
  • Reclassified G-3 after World War II
  • Decommissioned 03 December 1949
  • Scrapped in 1952.


  • 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 mount, three 20mm guns, two Mousetrap depth charge projectors, four K-gun depth charge projectors, and two depth charge tracks
  • Propulsion: Two 1,440bhp General Motors 16-258S diesel engines, Farrel-Birmingham single reduction gear, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    USS PC-605
    92k PC-604 and PC-605 being turned over to the Brazilian Navy at Miami, 11 June 1943.
    Official US Navy Seventh Naval District photo
    Dave Wright
    Guaíba (G 3)
    Guaiba 106k 19 August 1943
    Off Rio de Janeiro, Brazil
    Sixtant - World War II in the South Atlantic
    Guaiba 151k 19 August 1943
    Moored at Brazilian Navy Arsenal, Rio de Janeiro, Brazil

    There is no DANFS history available for PC-604
    Additional Resources and Websites of Interest
    Patrol Craft Sailors Association

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    This page created by Joseph M. Radigan and maintained by David Wright
    All pages copyright NavSource Naval History
    Last Updated 16 February 2024