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NavSource Online: Service Ship Photo Archive

Unadilla (YTM-4)
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Unadilla (YT-4) (1920 - 1944)
Unadilla (Harbor Tug No. 4) (1895 - 1920)


International Radio Call Sign:
November - Echo - Foxtrot - Tango
NEFT
Awards, Citations and Campaign Ribbons


Precedence of awards is from top to bottom, left to right
Top Row - World War I Victory Medal
Bottom Row - American Defense Service Medal - American Campaign Medal - World War II Victory Medal


District Harbor Tug:
  • Laid down, 29 April 1895, at Mare Island Navy Yard, Vallejo, CA.
  • Launched, 21 September 1895
  • Placed in service as Unadilla (Harbor Tug No. 4) (date unknown)
  • Designated District Harbor Tug (YT-4), 17 July 1920
  • Redesignated District Harbor Tug Medium (YTM-4), 15 May 1944
  • Placed out of service in September 1945
  • Struck from the Naval Register in May 1947
  • Transferred to the War Shipping Administration in May 1947
  • Final Disposition (fate unknown)
    Specifications:
    Displacement 355 t.
    Length 110'
    Beam 25'
    Draft 9' 11"(mean)
    Speed 12 kts.
    Complement unknown
    Armament none
    Propulsion steam, single screw

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    Size Image Description Source
    Ajax 70k Unadilla alongside Scindia off Mare Island Navy Yard, Vallejo, CA., circa 1899.
    US Navy photo # NH 71734 from the collections of the US Naval Historical Center, courtesy San Francisco Maritime Museum, San Francisco, CA.
    US Naval Historical Center
    Unadilla 80k Unadilla alongside the gunboat Concord off Mare Island Navy Yard, Vallejo, CA., 26 June 1903.
    Navy Yard Mare Island photo.
    Darryl Baker
    Unadilla 179k Unadilla alongside the Mare Island Navy Yard Flusher.* The "Flusher" is operating at the shipyard's torpedo boat wharf on 13 December 1906.Mare Island Navy Yard photo # MINSY 778-12-1906
    *A possible explanation for the function of the "Flusher" is that it was used to clear mud away from the dry dock caisson. Mare Island at this time only had a bucket dredge and they may have been afraid that it would punch a hole in the caisson when clearing the mud from the dry dock sill area. The other three dry dock were build with installed flusher systems to clear the caisson dry dock sill area.
    Darryl Baker
    Prometheus 272k Unadilla is to port of Ontario (Fleet Collier No. 2) as she is waterborne for the first time after launching at Mare Island, 5 December 1908. US Navy. Darryl Baker
    Prometheus 380k Unadilla is to port of Ontario (Fleet Collier No. 2) entering the water for first time during her launching at Mare Island, 5 December 1908. Other ships in photo left to right: Fortune (Harbor Tug No. 11), and Active (Harbor Tug No. 14) is to the far right. US Navy photo. Darryl Baker
    Jupiter 83k Unadilla stands by as the collier Jupiter is launched at Mare Island Navy Yard, 14 August 1912. The boat aft of Unadilla is a commercial Vallejo to Mare Island ferry.
    Navy Yard Mare Island photo # AC 3 005-8-12
    Darryl Baker
    Jupiter 92k Unadilla assists the collier Jupiter in the Mare Island Channel after launching, 14 August 1912.
    Navy Yard Mare Island photo # AC 3 007-8-12
    Darryl Baker
    Unadilla 194k Broadside view of Unadilla in her berth at Navy Yard Mare Island, Vallejo, CA., circa 1915-16.
    Navy Yard Mare Island photo.
    Darryl Baker

    View the Unadilla (YT-4 / YTM-4)
    DANFS history entry located at the US Naval Historical Center
    Crew Contact And Reunion Information
    No Information Available
    Additional Resources and Web Sites of Interest
    National Association of Fleet Tug Sailors
    US Navy Harbor Tug Boats
    Back To The Navsource Photo Archives Main Page Back To The Yard and District Craft Photo Index Back To The District Harbor Tug (YT) Photo Index
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    This page is created and maintained by Gary P. Priolo
    © 2005 Gary P. Priolo © 1996 - 2008 NavSource Naval History. All Rights Reserved.
    Last Updated 4 January 2008