USS Elf (SP-81)

USS Elf (SP-81) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919.

Elf in a tropical harbor as a private motorboat in early 1917, prior to her U.S. Navy service.

Elf (SP-81) as a civilian motorboat on a winter day in early 1917, just after her completion and prior to her U.S. Navy service
History
United States
Name:	USS Elf
Namesake:	Previous name retained
Builder:	Stanley Vansant
Completed:	1917
Acquired:	May 1917
Commissioned:	3 May 1917
Decommissioned:	9 January 1919
Fate:	Returned to owner 10 January 1919
Notes:	Operated as private motorboat Elf 1917 and from 1919
General characteristics
Type:	Patrol vessel
Length:	53 ft (16 m)
Beam:	12 ft (3.7 m)
Draft:	3 ft (0.91 m) mean
Speed:	22 knots
Complement:	8
Armament:	1 × 1-pounder gun

Elf was a civilian motorboat completed in early 1917 by Stanley Vansant. In early May 1917, the U.S. Navy acquired her under a free lease from her owner, Louis H. Eisenlohr of Philadelphia, Pennsylvania, for World War I service as a patrol boat. She was commissioned as USS Elf (SP-81) on 3 May 1917 with Lieutenant, junior grade, H. J. Bowes in command.

Elf performed patrol duty in the 4th Naval District until July 1918, when she was transferred to the 7th Naval District.

Elf was decommissioned on 9 January 1919 and returned to her owner on 10 January 1919.