11 (SP-1106), often rendered as USS Patrol #11, was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1918.

11 was built as a private motorboat in 1912 by Murray and Tregurthe at Boston, Massachusetts.

The U.S. Navy leased her from her owner, H. Galletin Pell of New York City, on 27 August 1917 and commissioned her for service in World War I as USS Patrol No.

11 operated on scout patrol in the 2nd Naval District, headquartered at Newport, Rhode Island, for remainder of World War I.

She was decommissioned quickly postwar returned to her owner on 5 December 1918.