Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online: Mine Warfare Vessel Photo Archive


MSO-505 was built for France.

Call sign:
Foxtrot - Alpha - Uniform - Whiskey

Aggressive Class Ocean Minesweeper:

  • Laid down 25 June 1954 as AM-505 by the Tacoma Boat Building Co., Inc., Tacoma, WA
  • Reclassified as an Ocean Minesweeper, MSO-505, 7 February 1955
  • Launched 6 August 1955
  • Sponsored by Mrs. C. E. Trescott
  • Completed 14 March 1956
  • Transferred to France and named Baccarat (M 623), 4 April 1956
  • Struck from the Navy Register in 1993
  • Fate unknown.


  • Displacement 934 t.
  • Length 190'
  • Beam 36'
  • Draft 12'
  • Speed 15 kts.
  • Complement 81
  • Armament: One 40-mm mount and two .50 cal. machine guns
  • Propulsion: Four General Motors diesel engines, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    MSO-505 222k 6 August 1955
    Immediately after being launched at the Tacoma Boat Building Yard
    Tacoma Public Library, Richards Studio, photo D92478-23
    Mike Green
    MSO-505 130k 4 April 1956
    Long Beach, CA
    Still wearing her U.S. Navy hull number
    Robert M. Cieri
    Baccarat (M 623)
    MSO-505 37k Line drawing of M-623 Gilles Obellianne
    MSO-505 73k Robert Hurst
    MSO-505 62k
    MSO-505 117k
    MSO-505 131k Passing HMS Dolphin, Portsmouth, England
    Photo by Marine Nationale
    MSO-505 104k c. 1981
    Tied up during a port visit to Holland
    MSO-450 179k c. 1983
    Berneval (M 613), ex-MSO-450 and Baccarat underway
    MSO-505 77k c. February 1990
    Limerick, Republic of Ireland
    Tied up inboard of Andromeda (M 643). Alencon (M 612) ex-MSO-453 is astern
    MSO-505 85k 14 July 1990
    Brest, France
    Dressed overall.
    MSO-505 84k c. 1990
    Brest, France
    In drydock

    There is no DANFS history available for MSO-505
    Additional Resources and Web Sites of Interest
    102 Minesweepers (MSO) Oceangoing Minesweepers
    Back To The Main Photo Index Back To the Mine Warfare Ship Photo Index Back to the Ocean Minesweeper (MSO) Photo Index

    Comments, Suggestions, E-mail Webmaster

    This page created and maintained by Joseph M. Radigan
    All pages copyright NavSource Naval History