 On 17 May or 2 June 1917, the U.S. Navy acquired her from Rosstown Boat for use as a section patrol boat during World War I.She was commissioned as USS "Sadie Ross" (SP-736) on 7 June 1917 with Boatswain's Mate J. E. Green, USNRF, in command.Assigned to the 1st Naval District in northern New England, "Sadie Ross" performed patrol duty for the rest of World War I.