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

USCGC Air Heron (WAVR 429)
ex-USS SC-684

Call sign:
Nan - William - Yoke - Able

ex-USS PC-684

SC-684 served both the U. S. Navy and Coast Guard.

SC-497 Class Submarine Chaser:

  • Laid down 6 July 1942 by American Cruiser Works, Riverside, MI
  • Launched 21 November 1942
  • Delivered 12 January 1943 and commissioned USS PC-684
  • Reclassified SC-684 in April 1943
  • Transferred to the Coast Guard 12 January 1946 and commissioned USCGC Air Heron (WAVR 429)
  • Struck from the Naval Register 21 January 1946
  • Sold 10 January 1948
  • Fate unknown.


  • Displacement 100 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
    No image of SC-684 is available at this time

    There is no DANFS history available for SC-684
    Additional Resources and Websites 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 by Joseph M. Radigan and maintained by Tom Bateman
    All pages copyright NavSource Naval History