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NavSource Online: Mine Warfare Vessel Photo Archive

Courtesy of Al Grazevich

Right patch contributed by Mike Smolinski

Implicit (MSO 455)

Call sign:
November - India - Juliet - India

Implicit served the Navies of the United States and the Republic of China.

Aggressive Class Minesweeper:

  • Laid down 29 October 1952 at Wilmington Boat Works, Wilmington, CA
  • Launched 1 August 1953
  • Commissioned USS Implicit (AM-455), 10 March 1954
  • Reclassified as an Ocean Minesweeper, MSO-455, 7 February 1955
  • Decommissioned 30 September 1994, sold to Taiwan the same day under the Security Assistance Program and renamed Yung Yang (M 1306)
  • Struck from the Navy Register 20 November 1994
  • Fate unknown.


  • Displacement 775 t.
  • Length 172'
  • Beam 35'
  • Draft 12'
  • Speed 14 kts.
  • Complement 78
  • Armament: As built, one single 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, replaced by four Waukasha Motors Co. diesel engines, controllable pitch propellers, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Implicit (AM 455)
    Implicit 228k 16 January 1954
    Conducting sea trials
    Bureau of Ships photo
    Robert Hurst
    USS Implicit (MSO 455)
    Implicit 40k USS Implicit Website Rick Szpyrka
    Implicit 72k
    Implicit 126k U.S. Navy photo Tom Langford
    Implicit 184k U.S. Navy photo Wendell Royce McLaughlin, Jr.
    Implicit 184k U.S. Navy photo David Buell
    Dynamic/Implicit 423k 10 September 1956
    Long Beach, CA
    Taking part in the first Fleet Review are Dynamic (MSO 432), Implicit and USS Columbus (CA 74)
    Carlo Martinelli
    Esteem 130k c. 1978
    Pier 90, Seattle, WA
    USS Esteem (MSO 438), USS Conquest (MSO 488), Implicit, USS Higbee (DD 806), USS McKean (DD 784) and inboard of the DD's is USS Hector (AR 7)
    Dave Hood, GMT2
    Implicit 350k 15 June 1983
    Underway near the coastline in the early morning, while assigned to the Naval Reserve Force
    U.S. Navy photo DN-ST-84-10126 by JO2 Lance Johnson, USN
    Robert Hurst
    Implicit 141k U.S. Navy photo from March 1984 edition of All Hands magazine Joe Radigan
    Implicit 403k 6 June 1990
    Vancouver, British Columbia, Canada
    Photo by Rick Garcia
    Chris Howell
    Implicit 132k c. July 1993 Richard Miller, BMCS, USNR, Ret.
    Yung Yang (M 1306)
    Implicit 55k Chinese Navy
    Implicit 291k C. September 2019
    Photo published and taken by Cheng Yang. Courtesy of Cheng Yang Photography
    Yu Chu

    Commanding Officers
    01LCDR Alfred Charles Filatrault, Jr., USN - USNA Class of 194410 March 1954 - June 1955
    02LCDR Arthur Ervin Hammarlund, USNJune 1955 - 19 April 1957
    03LT/LCDR Robert Donald Gee, USN19 April 1957 - 24 November 1958
    04LCDR Donald Jerome Hanson, USN24 November 1958 - 22 July 1960
    05LT/LCDR Charles Allan Dodd, USN22 July 1960 - 9 July 1962
    06LCDR Alexander Wolfgang Rilling, USN9 July 1962 - 17 July 1964
    07LCDR Richard Velez Dalton, USN - USNA Class of 1953
    Awarded the Joint Service Commendation Medal
    17 July 1964 - 23 June 1966
    08LT/LCDR George Jones Carver, USN23 June 1966 - 9 September 1968
    09LCDR Virgil Earl Strickland, Jr., USN9 September 1968 - 15 October 1970
    10LCDR Donald Eddie Larison, USN15 October 1970 - June 1972
    11LCDR Michael William Bordy, USN - USNA Class of 1965
    Awarded the Defense Distinguished Service Medal, the Legion of Merit and the Meritorious Service Medal - Retired as Rear Admiral
    June 1972 - June 1974
    12LCDR Thomas Williams Wright, USNJune 1974 - 6 March 1976
    13LCDR Gale Dean Brink, USN - USNA Class of 19696 March 1976 - November 1978
    14LCDR Howard Frank Lee, USNNovember 1978 - October 1980
    15LCDR Bruce Edward Holdt, USNOctober 1980 - December 1982
    16LCDR Thomas Allan Baker, USNDecember 1982 - December 1984
    17LCDR Bruce Bennett Giannotti, USN - USNA Class of 1972December 1984 - 11 December 1986
    18LCDR Bruce Thomas Van Belle, USN11 December 1986 - February 1988
    19LCDR Steven William Nerheim, USNFebruary 1988 - December 1988
    20LCDR Robert Emmett McCabe, III, USN - USNA Class of 1974December 1988 - April 1989
    21LCDR Daniel Allen Burns, USN - USNA Class of 1974April 1989 - 15 July 1989
    22LCDR Richard Crittendon Rush, USN - USNA Class of 197515 July 1989 - July 1991
    23LCDR Michael Lee James, USNJuly 1991 - January 1994
    24CDR William Conrad Fosseen, USNJanuary 1994 - 1 September 1994
    25CDR George Decker Taylor, Jr., USN1 September 1994 - 30 September 1994
    Courtesy Wolfgang Hechler, Ron Reeves, Peter M. Leenhouts and Joe Radigan

    View the Implicit (MSO 455)
    DANFS History entry located on the Haze Gray & Underway Website
    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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