|Namesake:||California, which was admitted to the Union 8 September 1850 as the 31st State|
|Owner:||the San Francisco Bar Pilots Association|
|Laid down:||date unknown|
|Completed:||in 1910 at San Francisco, California|
|Acquired:||leased by the Navy in the spring of 1917|
|Commissioned:||28 April 1917|
|Decommissioned:||23 November 1918|
|Struck:||23 November 1918 (est.)|
|Homeport:||San Francisco, California|
|Fate:||returned to the San Francisco Bar Pilots Association in November 1918|
USS California (SP-647) – later known as USS SP-647 – was originally a motorboat used by the San Francisco Bar Pilots Association as a pilot boat. She was leased by the Navy, and outfitted as an armed section patrol craft, assigned to patrol and protect San Francisco harbor. At war's end, she was returned to the pilot's association.
A California pilot boat
California, a 58' 2" motorboat, was built in 1910 at San Francisco, California, for local employment as a pilot boat. She was leased from the San Francisco Bar Pilot's Association and commissioned in the Navy as USS California (SP-647) on 28 April 1917.
World War I service
The fourth ship to be so named by the U.S. Navy, California (No. 647), served Section Patrol duties during the war. Later renamed USS SP-647, the motor boat performed harbor patrol duties and acted as guard boat for Pier 29 at San Francisco until 23 November 1918
California (No. 647) was returned to the San Francisco Bar Pilot's Association on 23 November 1918.
- California (schooner) (San Francisco Bar Pilots Association pilot boat 1931–1972)
- U.S. Navy
- World War I
- This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.
- California (Motor Boat, 1910). Served as USS California (SP-647) and USS SP-647 in 1917–1918
- NavSource Online: SP-647 – ex-California