USS Vigilant (SP-406)

The third USS Vigilant (SP-406), later USS SP-406, was a United States Navy patrol vessel in commission from 1917 to 1918. Vigilant was built as the private motorboat Marguerite II in 1909 by Henry L. Blatz at Philadelphia, Pennsylvania. She had been renamed Vigilant by the time the U.S. Navy acquired her from her owner, E. B. Smith of Philadelphia, in 1917 for use as a section patrol vessel during World War I. She was commissioned as USS Vigilant (SP-406) on 19 May 1917 at the Philadelphia Navy Yard with Ensign John B. Yarnall, USNRF, in command.

USS Vigilant (SP-406)

The third USS Vigilant (SP-406), later USS SP-406, was a United States Navy patrol vessel in commission from 1917 to 1918. Vigilant was built as the private motorboat Marguerite II in 1909 by Henry L. Blatz at Philadelphia, Pennsylvania. She had been renamed Vigilant by the time the U.S. Navy acquired her from her owner, E. B. Smith of Philadelphia, in 1917 for use as a section patrol vessel during World War I. She was commissioned as USS Vigilant (SP-406) on 19 May 1917 at the Philadelphia Navy Yard with Ensign John B. Yarnall, USNRF, in command.