In mid-April, after this difficult task had been completed, she accompanied Porter's mortar schooners upstream to a point a short distance below Forts Jackson and St. Philip, which guarded the river, approaches to New Orleans, Louisiana, from the sea. There, she supplied Porter's guns with ammunition as they shelled the Confederate works during the days preceding the bold dash of Farragut's steam-propelled men-of-war past the guns of the forts to capture New Orleans.