The first USS Whippet (SP-89) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919.

Whippet was a civilian motorboat completed in 1917 by Greenport Basin and Construction Company at Greenport on Long Island, New York.

On 9 July 1917, the U.S. Navy acquired her from her owner, Mr. O. C. Jennings of New York City, for World War I service as a patrol boat.

Whippet conducted antisubmarine and coastal defense patrols in the 2nd Naval District in southern New England during World War I.

She was stricken from the Navy List and returned to her owner the same day.