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Section Patrol Craft Photo Archive

USLHT Cosmos

Call sign (1935):
William - William - Cast - Xray

USS Elmasada (SP 109)

Elmasada served both the U. S. Navy and Lighthouse Service


  • Built in 1909 as Elmasada by Robert Jacob, City Island, NY for C. B. Fox of New Orleans, LA
  • Acquired by the Navy 31 May 1917
  • Commissioned USS Elmasada (SP 109), 4 June 1917
  • Delivered to the Navy 23 June 1917
  • Struck from the Navy list 20 May 1919
  • Transferred in June 1919 to the Lighthouse Service at New Orleans, LA and renamed USLHT Cosmos
  • Decommissioned in 1936
  • Sold 24 June 1936
  • Fate unknown.


  • Displacement 47 t.
    1919 - 61 t.
  • Length 75'
  • Beam 15' 2"
  • Draft 4'
  • Speed 12 kts.
  • Complement 11
  • Armament: One 3-pounder and one machine gun
  • Propulsion: Two 65hp 4-cylinder 20th Century gasoline engines, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Motorboat Elmasada
    Elmasada 143k Coarse screen halftone reproduction, copied from a contemporary publication, of a photograph showing Elmasada underway prior to 1917
    U.S. Navy photo NH 104068
    Naval Historical Center
    USS Elmasada (SP 109)
    Elmasada 117k At New Orleans, Louisiana, during the World War I era. The steamship Santa Rita is in the dry dock in the right background
    U.S. Navy photo NH 54366
    Naval Historical Center
    Elmasada 96k At anchor, during the World War I era.
    U.S. Navy photo NH 54367
    USLHT Cosmos
    Elmasada/Cosmos 84 c. March 1925
    National Archives photo from U.S. Lighthouse Society website
    John Spivey
    Photo added 23 December 2021

    View the Elmasada (SP 109)
    DANFS history entry located on the Naval History and Heritage Command web site
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