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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:
  • Built by Mare Island Navy Yard, Vallejo, CA
  • Authorized, 26 July 1894
  • Laid down, 29 April 1895
  • Launched, 21 September 1895
  • Placed in service as Unadilla (Harbor Tug No. 4), November 1895
  • Designated District Harbor Tug (YT-4), 17 July 1920
  • Redesignated District Harbor Tug Medium (YTM-4), 15 May 1944
  • Placed out of service, September 1945
  • Struck from the Naval Register, May 1947
  • Transferred to the War Shipping Administration, May 1947
  • Final Disposition, fate unknown, probably scrapped 1947-48
    Specifications:
    Displacement 345 tons
    Length 110'0"
    Beam 25'0"
    Draft 9' 11"(mean)
    Speed 12 kts.
    Complement unknown
    Armament none
    Propulsion
    one single-ended triple-expansion reciprocating steam engine
    one coal-fired boiler
    single propeller, 500ihp
    Click On Image
    For Full Size Image
    Size Image Description Source
    Unadilla 1607k Invitation to the launching of US Tug Unadilla, 21 September 1895. Darryl Baker
    Unadilla 164k Unadilla ready for launching at Mare Island, 21 September 1895.
    US Navy photo # NH 74753, from the collections of Naval History & Heritage Command
    Mike Green
    Unadilla 200k Unadilla being launched at Mare Island, 21 September 1895.
    US Navy photo # NH 71248, from the collections of Naval History & Heritage Command
    Mike Green
    Unadilla 149k Undated photo of Unadilla at Mare Island, probably soon after completion.
    US Navy photo # NH 71717, from the collections of Naval History & Heritage Command
    Mike Green
    Ajax 70k Unadilla alongside USS 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 3093k Unadilla outboard and alongside the decommissioned cruiser Boston at Mare Island Navy Yard in September 1899. USS Solace (after section visible) is moored pierside forward of Boston and Unadilla.
    File name: MINSY Sep 1899 03 Boston, Unadilla and Solace.
    Darryl Baker
    Hancock 674k USS Hancock underway with the assistance of USS Active on the starboard side and likely Unadilla on the port side off Mare Island Navy Yard, date unknown.
    US Navy photo # NH 84408 from the collections of the US Naval Historical Center
    Darryl Baker
    Alert 1465k USS Alert under tow by the tug Unadilla in San Francisco Bay, circa 1902. Darryl Baker
    Unadilla 80k Unadilla alongside the gunboat USS 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 docks were built with installed flusher systems to clear the caisson dry dock sill area.
    Darryl Baker
    Unadilla 1166k Unadilla moored pierside at Mare Island Navy Yard, Vallejo, CA., circa 1906-07.
    Naval History & Heritage Command photo NH 71703
    Darryl Baker
    Prometheus 272k Unadilla is to port of USS 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 USS Ontario (Fleet Collier No. 2) entering the water for the first time during her launching at Mare Island, 5 December 1908. Other ships in photo left to right: USS Fortune (Harbor Tug No. 11), and USS Active (Harbor Tug No. 14) is to the far right. US Navy photo. Darryl Baker
    Unadilla 2007k Unadilla dry docked in the middle position at the far end of the Dry Dock #2 at Mare Island Navy Yard, 14 December 1911. USS Cleveland (C-19) is to the left of the dry dock and in the dry dock with Unadilla are USS Preble (Destroyer # 12) (left) USS Farragut (Torpedo Boat # 11) (right), next is USS Hopkins (Destroyer # 6) and USS Perry (Destroyer # 11).
    MINSY photo # 223-12-1911, Navy Photo, 12/14/1911.
    Darryl Baker
    Jupiter 83k Unadilla stands by as the collier USS 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 USS 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
    Celtic
    AF 2 1920 02, Navy Photo. June 1920
    1227k Unadilla (YT-4) alongside USS Celtic (AF-2) in the Mare Island channel in June 1920. Shipyard logs indicate Celtic was in overhaul at Mare Island Navy Yard from 8 December 1919 until 25 June 1920. Darryl Baker
    Celtic
    AF 2 1920 03, Navy Photo. June 1920
    1848k

    Unadilla (YT-4 / YTM-4)
    DANFS history entry located at the US Naval History and Heritage Command
    Crew Contact And Reunion Information
    U.S. Navy Memorial Foundation - Navy Log

    Additional Resources and Web Sites of Interest
    National Association of Fleet Tug Sailors

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    This page was created by Gary P. Priolo and is maintained by David L. Wright
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    Last Updated 27 May 2016