"Richmond" continued to operate in Mobile Bay and also in Pensacola Bay for a time before arriving at the Southeast Pass of the Mississippi River on 23 April 1865. That same evening, the Confederate ram dashed down river from the Red River in an attempt to reach the open sea. Successfully passing Union ships at the mouth of the Red River and at New Orleans, "Webb" ran out of luck some below New Orleans. Closely pursued by Union gunboats behind her, "Webb" found "Richmond" guarding the estuary leading to the Gulf of Mexico. Trapped, "Webb" was run ashore, set afire, and blown up by her crew.