(SP45: t. 5; l. 40; b. 9; dr. 23; s. 25 k.; a. I mg.)
Patrol #1, a motor boat built by Britt Bros., Lynn, Mass., in 1916, commissioned 4 May 1917 and formally purchased by the Navy from A. Loring Sweeney, Boston, 25 May 1917.
Patrol #1 operated out of the 7th Naval District, headquartered at Key West on patrol throughout World War I. While anchored at North Beach Basin, Key West a severe hurricane literally battered her to pieces. Her name was struck from the Navy List 4 October 1919.