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NavSource Online: Mine Warfare Vessel Photo Archive

Monadnock (ACM 10)
ex-CM-9
ex-CMc-4



Call sign:
Nan - Charlie - Able - Victor

Monadnock Class Coastal Minelayer:

  • Laid down in 1938 as Cavalier by Pusey and Jones Corp., Wilmington, DE
  • Acquired by the Navy 5 May 1941 and converted to a Coastal Minelayer by the Bethlehem Steel Co., Atlantic Works, East Boston, MA
  • Renamed Monadnock 14 May 1941
  • Commissioned USS Monadnock (CMc-4), 2 December 1941
  • Reclassified as a Minelayer, CM-9, 1 May 1942
  • Reclassified as an Auxiliary Minelayer, ACM-10, 10 July 1945 at San Francisco, CA
  • Decommissioned 3 June 1946 at San Francisco
  • Struck from the Naval Register, 3 July 1946
  • Transferred to the Maritime Commission for disposal 20 June 1947
    Naval Vessel Register of 1 January 1949 list as being transferred to the War Shipping Administration in July 1947
  • Sold into mercantile service to a Panamanian company in 1949 and renamed Karukara
  • Sold in 1952 to Naviera Aznar S. A. of Bilboa, Spain, renamed Monte de la Esperanza and operated for more than 20 years transporting bananas from the Canary Islands to the United Kingdom
  • Sold to the Marine Institute of Spain and renamed Esperanza del Mar. She was equipped as a hospital ship operating out of the Canary Islands to help fishing ships in the area for more than 10 years
  • Sunk as an artificial reef in 2000 off the coast of Spain.

    Specifications

  • Displacement 3,110 t.
  • Length 292'
  • Beam 48' 6'
  • Draft 19' 8"
  • Speed 17.5 kts.
  • Complement 201
  • Armament: Two 3"/50 dual purpose mounts (Forward 3"/50 removed and replaced with one quad 40mm mount), two twin 40mm mounts, 10 single 20mm mounts and two depth charge racks
  • Propulsion: Two Babcock and Wilcox superheating steam boilers, single 4,000shp General Electric geared turbines, 4,000shp, one shaft.
    Click on thumbnail
    for full size image
    Size Image Description Source
    SS Cavalier
    Monadnock 142k At her builder's on 2 May 1938
    U.S. Navy photo from the June 2004 edition of Naval History magazine.
    Joe Radigan
    Monadnock 97k Off the Southern Railway Piers at Portsmouth, Va., on 22 August 1939. Note the absence of masts and cargo booms fore and aft and the two open side-loading ports amidships through which she loaded her cargo of vehicles and parcels
    Photo from Shipscribe.com
    Mike Green
    Monadnock 80k c. 1938/1940
    Naval History and Heritage Command photo NH 101424.
    Robert Hurst
    USS Monadnock (CMc 4)
    Monadnock 90k 4 December 1941
    Near the Boston Navy Yard two days after commissioning
    National Archives photo 19-N-25325.
    Robert Hurst
    USS Monadnock (CM 9)
    Monadnock 147k Original photo: c. 1942
    Replacement photo: c. 1942
    U.S. Navy photo from the 1943/1944 edition of Janes Fighting Ships
    Original photo: Gunter Krebs
    Replacement photo: Robert Hurst
    USS Monadnock (ACM 10)
    Monadnock 87k c. 1945
    Sasebo, Japan.
    Chuck Schoen
    Monadnock 124k c. October 1945
    Photographed from USS Holland (ARG 18) with a Submarine Chaser (PC) alongside at the Boston Navy Yard two days after commissioning. The stern does not show the large sponsons aft added to her sister in 1944 and she probably did not receive this alteration. Her foremast has been moved to a position behind the bridge, probably during her conversion in mid-1945 to an auxiliary minelayer (ACM) and minesweeper support ship
    Naval History and Heritage Command photo from the Stillwater Collection.
    Robert Hurst
    Monadnock 98k Probably at San Francisco shortly after her return there in April 1946. Note the foremast in its new position behind the bridge, the new 40 mm quad mount forward, and the extreme weathering to the hull paint on the bow.
    Naval History and Heritage Command photo.
    Monte de la Esperanza
    Monadnock 40k . Alberto García

    View the Monadnock (ACM 10)
    DANFS History entry located on the Haze Gray & Underway Website
    Additional Resources and Web Sites of Interest
    Naval Minewarfare Association
    Association of Minemen
    Back To The Main Photo Index Back To the Mine Warfare Ship Photo Index Back to the Coastal Minelayer (CMc) Photo Index Back to the Minelayer (CM) Photo Index Back to the Auxiliary Minelayer (ACM) Photo Index

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    This page created by Gary P. Priolo and maintained by Joe Radigan
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