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NavSource Online:
Section Patrol Craft Photo Archive

Alcalda (SP 630)

Civilian call sign (1919):
Love - Cast - Fox - Quack

Patrol Yacht:

  • Built in 1910 as Heather by I. M. Bayles and Sons, Port Jefferson, Long Island, NY
  • Acquired by the Navy 12 May 1917
  • Commissioned USS Alcalda (SP 630), 11 May 1917
  • Struck from the Naval list and returned to her owner 11 January 1919
  • Fate unknown.


  • Displacement 77 t.
  • Length 105'
  • Beam 15' 5"
  • Draft 6' (aft)
  • Speed 13.9 kts.
  • Complement 16
  • Armament: One 3-pounder, one 1-pounder, two machine guns and one "Y" gun
  • Propulsion: One 600ihp gasoline engine, one shaft.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Alcalda 64k Photographed prior to World War I. The original photograph bears the mark of the New York yacht brokers Gielow & Orr.Underway during World War I.
    USN Photo NH 100648
    Naval Historical Center

    Dictionary of American Naval Fighting Ships History:


    A variant spelling of alcalde, a Spanish term designating an official usually serving as a mayor or a judge.

    Alcalda (SP-630) - a yacht built in 1910 in New York at Port Jefferson on Long Island by I. M. Bayles & Sons - was acquired by the Navy on free lease from Mr. Farley Hopkins on 12 May 1917 though she was officially commissioned on the day before the transaction was completed. The vessel patrolled the waters of the 2d Naval District to prevent incursions by German U-boats and to locate any mines laid by either U-boats or surface raiders. Alcalda was returned to her owner on 11 January 1919, and her name was stricken from the Navy list on that same day.

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