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NavSource Online: Mine Warfare Vessel Photo Archive

Courtesy of Mike Smolinski

Dynamic (MSO 432)

Call sign:
November - Lima - Whiskey - Whiskey

Dynamic served the Navies of the United States and Spain

Guadalete (M 41) call sign:
Echo - Bravo - India - India

Aggressive Class Minesweeper:

  • Laid down 31 October 1951 at Colberg Boat Works, Stockton, CA
  • Launched 17 December 1952
  • Commissioned USS Dynamic (AM-432), 15 December 1953
  • Reclassified as an Ocean Minesweeper, MSO-432, 7 February 1955
  • Dynamic changed divisions in September 1967 and became a part of Mine Division 71. The division consisted of: Dynamic, Engage (MSO 433), Impervious (MSO 449), Inflict (MSO 456) and
    Fortify (MSO 446)
  • Decommissioned 8 June 1971
  • Sold to Spain 17 July 1971 under the Security Assistance Program and renamed Guadalete (M-41)
  • Struck from the Naval Register 1 August 1974
  • Reclassified PVZ-41 in 1980
  • Struck from the Spanish Navy list 13 July 1998, per Resolution 174/98
  • Decommissioned 15 July 1998
  • Fate unknown.


  • Displacement 630 t.(lt), 755 t.(fl)
  • Length 172'
  • Beam 35'
  • Draft 10'
  • Speed 14 kts.
  • Complement 80
  • Armament: As built, one 40mm gun mount and two .50 cal. machine guns. Final configuration, bow gun replaced by one twin 20mm gun mount, two .50 cal. machine guns remain
  • Propulsion: Four Packard ID1700 diesel engines, two shafts, two controllable pitch propellers.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Dynamic (AM 432)
    Dynamic 132k 2 July 1952
    Under construction
    Joe Maturano
    USS Dynamic (MSO 432)
    Dynamic 123k USS Dynamic (MSO-432) Website
    Rick Szpyrka and Chris Sprenkle
    Dynamic 201k U. S. Navy Photo from the February 1954 issue of All Hands magazine Original photo: Joe Radigan
    Replacement photo: Robert Hurst
    Dynamic/Implicit 423k 10 September 1956
    Long Beach, CA
    Taking part in the first Fleet Review are Dynamic, USS Implicit (MSO 455) and USS Columbus (CA 74)
    Carlo Martinelli
    Dynamic 261k c. 1967
    Photo taken from USS Caliente (AO 53
    Bill Dougherty
    Dynamic 301k
    Dynamic 345k
    Long Beach 67k c. 1960's
    Mine Division 91 homecoming, Pier 9, Long Beach, CA
    George Arthur photos
    Floyd Farrar
    Long Beach 61k
    Long Beach 69k
    Long Beach 101k
    Long Beach 111k
    Long Beach 82k
    Long Beach 86k c. Mid-1960's
    Dry dock No. 1, Long Beach Navy Shipyard
    George Arthur Photo
    Guadalete (M 41)
    Dynamic 99k . 102 Minesweepers Website
    Dynamic 110k
    Guadalete (PVZ 41)
    Guadalete 59k c. July 1981
    Off Almeria, Spain
    Ignacio López

    Commanding Officers
    01LT John Franklyn Butler, USN15 December 1953 - 12 November 1954
    02LT George Washington Beck, Jr., USN12 November 1954 - 1955
    03LCDR Harry Eugene Rorman, USN1955 - 16 November 1956
    04LT/LCDR George August Aubert, USN16 November 1956 - 20 November 1958
    05LT/LCDR William Henry Meanix, Jr., USN - USNA Class of 194920 November 1958 - 12 August 1960
    06LCDR Raymond Elliott Howe, USN - USNA Class of 194612 August 1960 - 5 April 1963
    07LT/LCDR James Edward Young, USN5 April 1963 - 1965
    08LCDR Richard James Fleeson, USN - USNA Class of 19521965 - 31 August 1966
    09LT/LCDR William John Pritchard, USN31 August 1966 - 6 May 1968 (Died of a heart attack on board)
    10LT James Joseph Gildea, USN (Acting)6 May 1968 -19 May 1968
    11LT/LCDR William Raymond Pressler, Jr., USN19 May 1968 - 23 January 1970
    12LCDR Joe Ramon Lee, USN23 January 1970 - 8 June 1971
    ??LCDR Samuel William Sax, USNR
    Courtesy Wolfgang Hechler, Ron Reeves, Bill Gonyo and Joe Radigan

    Dictionary of American Naval Fighting Ships: The second Dynamic (AM 432) was launched 17 December 1952 by Colberg Boat Works, Stockton, California; sponsored by Mrs. R. W. Harbey; and commissioned 15 December 1953, Lieutenant Commander J. F. Butler in command. She was reclassified MS0-432 on 7 February 1955.

    Assigned to Mine Division 91, Squadron 9, Mine Force Pacific Fleet, Dynamic operated out of her home port of Long Beach, California, that included training with other ships, aircraft, soldiers and Marines and with minesweepers of other navies. She cruised to the Far East in 1957-58 visiting ports in Japan, Korea, and Taiwan, and participated in minesweeping exercises with ships of the Chinese Nationalist and Korean navies. She made a similar cruise in the first half of 1960, joined the other fleet units in the "Pacific Festival" at San Francisco in September and received a yard overhaul during the remainder of
    the year.
    Back to the Main Photo Index Back to the Mine Warfare Ship Photo Index Back to the Ocean Minesweeper (MSO) Photo Index

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