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NavSource Online:
Submarine Chaser Photo Archive


Call sign (1924):
Nan - Oboe - Tare - Rush

Call sign (1919):
George - Tare - Quack - Boy

SC-306 served the U. S. Navy and the Department of Justice

SC-1 Class Submarine Chaser:

  • Laid down by the Puget Sound Navy Yard, Bremerton, WA
  • Commissioned 27 February 1918
  • Entered Mare Island Navy Yard, Mare Island, CA 13 July 1921
  • Decommissioned 20 June 1922 at Mare Island
  • Towed from Mare Island 28 November 1922
  • Transferred to the Department of Justice 17 December 1930 for use at Alcatraz Federal Penitentiary and named McDowell
  • Was still in use at Alcatraz in 1950
  • Fate unknown.


  • Displacement 85 t.
  • Length 110'
  • Beam 14' 8.75"
  • Draft (fl) 5' 8"
  • Speed 18 kts.
  • Complement 27
  • Armament: One 3"/23 gun mount, two .30 cal. machine guns, and one depth charge projector "Y Gun"
  • Propulsion: Three 220hp Standard gasoline engines, three screws.
    Click on thumbnail
    for full size image
    Size Image Description Source
    SC-288 195k Line drawings by A. D. Baker, III from U.S. Small Combatants: An Illustrated Design History, by Norman Friedman Robert Hurst
    SC-288 122k

    Commanding Officers
    01ENS Orren D. Gove, USNRF1918
    Courtesy Joe Radigan

    There is no DANFS history available for SC-306
    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

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    This page created and maintained by Joseph M. Radigan
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