USS Alacrity (SP-206) was a steel cruising yacht that served in the US Navy as a section patrol craft.

[4] The yacht Alacrity was acquired by the Navy on 28 April 1917 under a free lease from Mr. John H. Blodgett and was placed in commission on 30 May 1917 at Boston, Massachusetts.

Designated hull number SP-206 the vessel was assigned to the 1st Naval District for the duration of World War I conducting patrols from the Boston and Provincetown, Massachusetts, section bases.

Following the armistice in November 1918, the motorboat continued naval service until she was finally returned to her owner on 28 April 1919, the second anniversary of her acquisition.

[6] Blanchard, designated first CGR-106 and later WPYc-369, was assigned to the Gulf Sea Frontier serving out of Key West conducting anti-submarine and escort duties until decommissioned on 25 November 1943 and returned to her owners.