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NavSource Online: Mine Warfare Vessel Photo Archive

Monadnock (MMA 14)
ex-USAMP Major Samuel Ringgold (MP 11)

Camanche Class Auxiliary Minelayer:

  • Laid down for the U.S. Army Coast Artillery Corps, Mine Planter Service as USAMP Major Samuel Ringgold (MP 11) by the Marietta Manufacturing Co., Point Pleasant, WV
  • Transferred to the Navy in March 1951 and berthed at Boston, MA with the Atlantic Reserve Fleet
  • Designated as an Auxiliary Minelayer, ACM-14
  • Reclassified MMA-14, 7 February 1955
  • Named Monadnock 1 May 1955
  • Monadnock was never commissioned in the U. S. Navy
  • Struck from the Navy Register 1 July 1960
  • Sold and renamed Thiti
  • Renamed Amazonia under Liberian registry
  • Sold in the 1980s under Italian registry and renamed Dear
  • Fate unknown.


  • Displacement 1,300 t.
  • Length 188' 2"
  • Beam 37'
  • Draft 12' 6"
  • Speed 12.5 kts.
  • Complement 69
  • Armament: One 40mm gun mount and four 20mm mounts
  • Propulsion: Two Combustion Engineering header type boilers, two 1,200shp Skinner Unaflow reciprocating engines, no reduction gear, two shafts.
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    USAMP Maj. Samuel Ringgold (MP 11)
    Ringgold 11k

    Samuel B. Ringgold (1796 – May 11, 1846) was an artillery officer in the United States Army who was noted for several military innovations which caused him to be called the "Father of Modern Artillery." He was also, according to some records,[citation needed] the first U.S. officer to fall in the Mexican–American War, perishing from wounds received at the Battle of Palo Alto
    National Portrait Gallery, Smithsonian Institution. Painted by John Vanderlyn

    Tommy Trampp
    Photo added 20 September 2021
    Ringgold/Monadnock 91k "Frank" Dee Callan
    Ringgold/Monadnock 73k c. 1948/1952
    Seen here as the Maj. Samuel Ringgold (MP 11) during an "open house" in the Canal Zone
    Harold Ferguson
    Ringgold/Monadnock 102k
    Monadnock (MMA 14)
    Ringgold/Monadnock 147k c. August 1960
    Atlantic Reserve Fleet, South Boston Annex, Boston Navy Yard
    Moored astern of Dayton (CL 105)
    ©Richard Leonhardt

    View the Monadnock (MMA 14)
    DANFS History entry located on the Haze Gray & Underway Website
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