USS Minnemac II (SP-202) was a United States Navy patrol vessel in commission from 1917 to 1919.

Minnemac II in civilian use sometime between 1914 and 1917, prior to her U.S. Navy service as USS Minnemac II.
History
United States
Name	USS Minnemac II
Namesake	Previous name retained
Builder	George Lawley and Sons, Neponset, Massachusetts
Completed	1914
Acquired	7 May 1917
Commissioned	5 July 1917
Fate	Returned to owner 13 January 1919
Notes	Operated as civilian motorboat Minnemac II 1914-1917 and from 1919
General characteristics
Type	Patrol vessel
Tonnage	78 Gross register tons
Length	78 ft 4 in (23.88 m)
Beam	14 ft 6 in (4.42 m)
Draft	5 ft (1.5 m)
Speed	13 knots
Complement	9
Armament	1 × 3-pounder gun 2 × machine guns

Minnemac II was built as a civilian motorboat of the same name in 1914 by George Lawley and Sons at Neponset, Massachusetts. The U.S. Navy acquired her under a free lease from her owner, Arthur J. Eddy of Chicago, Illinois on 7 May 1917 for World War I service as a patrol vessel. She was enrolled in the Naval Defense Reserve Force on 3 July 1917 and commissioned as USS Minnemac II (SP-202) on 5 July 1917.

Assigned to the Great Lakes, Minnemac II patrolled the waters of Lake Michigan out of her assigned section patrol base.

Following the end of World War I, Minnemac II was returned to her owner on 13 January 1919.