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NavSource Online: Mine Warfare Vessel Photo Archive


Call sign:
Nan - Baker - King - Baker

YMS-27 served the Navies of the United States and France.

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 24 December 1941 as YMS-27 by the Greenport Basin and Construction Co., Greenport, Long Island, NY
  • Launched 7 March 1942
  • Completed 30 June 1942
  • Conducted her shakedown cruise escorting a floating drydock to Guantanamo Bay, Cuba. Eventually returning to the Newport News/Hampton Roads marshalling area for the amphibious invasion of North Africa. Deployed
    with American forces from Oran to Tunis and Bizerte. Participated in the landings on Sicily. During the invasion of Salerno, the ship's responsibility consisted of laying a smoke screen for the protection of the cruisers in
    deeper water. Took part in Operation Husky, the invasion of southern France
  • Transferred to France 9 October 1944 and named Hortensia (D 333)
  • Sold to France 21 March 1949
  • Struck from the Naval Register 28 April 1949
  • Reclassified D-19 and M-659
  • Decommissioned 8 March 1961
  • Fate unknown.


  • Displacement 270 t.
  • Length 136'
  • Beam 24' 6"
  • Draft 8'
  • Speed 15 kts.
  • Complement 32
  • Armament: One 3"/50 dual putpose gun mount, two 20mm mounts and two depth charge projectors
  • Propulsion: Two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt signle reduction gear, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    USS YMS-27
    YMS-27 60k . Charles Allen Curtis
    via Rob Pawlak
    YMS-27 24k
    YMS-27 Crew 44k Charles Allen Curtis (with pipe)
    YMS-27 Crew 71k Crew photo
    YMS-27 99k c. January 1943
    Advertisement for the Greenport Basin and Construction Co.
    Tommy Trampp
    Hortensia (D 333)
    YMS-27 83k Photo from Navies of the Second World War: The French Navy, by Henri Le Masson Robert Hurst

    There is no DANFS history available for YMS-27
    Additional Resources and Websites of Interest
    Naval Minewarfare Association Association of Minemen

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    This page created and maintained by Joseph M. Radigan
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