USS Mystery (SP-16)

For other ships with the same name, see USS Mystery.

USS Mystery (SP-16) was the proposed designation for an armed motorboat that never actually served in the United States Navy.

Mystery in 1916 or 1917.
History
United States
Name	USS Mystery (proposed)
Namesake	Previous name retained
Builder	Gas Engine and Power Company, Morris Heights, New York
Completed	1916
Acquired	Never
Commissioned	Never
Notes	Registered as SP-16 for potential U.S. Navy service
General characteristics
Type	Patrol vessel (proposed)
Length	58 ft 1.5 in (17.717 m)
Propulsion	Twin engines
Speed	27 knots[1]

Mystery was a private motorboat built in 1916 by the Gas Engine and Power Company at Morris Heights, New York. The U.S. Navy inspected her in early 1917 for possible World War I service as a patrol boat in the 3rd Naval District and she was registered accordingly with the naval section patrol designation SP-16. However, the Navy never took possession of or commissioned Mystery, and she remained in civilian hands throughout the war.