Kammala wannan jumla: an gina shi ne don Navy Navy a lokacin yakin basasar Amurka. An sanya jirgin zuwa James River Flotilla na Arewacin Atlantic Blockading Squadron bayan kammala a watan Satumba na 1864. Jirgin ya shafe mafi yawan lokutansa a kan kogin James inda zai iya tallafawa ayyukan da Richmond ya yi da kuma kare shi daga hare-haren da 'yan bindigar' yan bindigar na James River Squadron suka yi. Ta yi amfani da batutuwan artillery na Confederate a cikin shekara kuma daga bisani ya shiga cikin farko da na biyu.
Yaƙe-yaƙe na biyu na Fort Fisher, yana kare hanyoyin zuwa Wilmington, North Carolina, a watan Disamba 1864 <unk> Janairu 1865. "Mahopac" ya koma Kogin James bayan kama Fort Fisher kuma ya kasance a can har sai Richmond, Virginia ya mallaki a farkon Afrilu.