On 30 July 1812, "Nancy" sailed to Fort Erie in convoy with the new Provincial Marine schooner , returning with military supplies and 60 men of the 41st Regiment who then participated in the Siege of Detroit. After the British and members of Tecumseh's Confederacy under Major General Isaac Brock had captured Detroit, "Nancy" carried troops, stores and provisions between Fort Erie and Detroit during the late summer and autumn. The following spring, on 23 April 1813 "Nancy" joined a small squadron in moving Major General Henry Procter's division from Amherstburg to Miami Bay, positioning them for what would be an unsuccessful Siege of Fort Meigs.