 Nyorai kupfuurira kweiyi ndima - Kanoni yenguva refu yokuedza, pfuti yaSawyer, yakaiswa paFort Calhoun pakati pa1861 mukati meHondo yaVagari vemo. Chombo chacho chakanga chabviswa, uye mufananidzo waiva mupepanhau raAugust 1861 unoratidza kuti chakanga chakaiswa mungoro ine makona akakwirira. Nharaunda yechombo ichi yakatambanuka nzira yose kuenda kuSewells Point, makiromita anopfuura matatu kure uko Norfolk Naval Base zvino iri, nzvimbo yeConfederate ivhu rakasimba rine masvingo uye redon uye matatu mabhatiri epfuti anosvika pfuti makumi mana neshanu. Chombo chacho chakanga chiri 24-pounder iyo yaizopfura projectile ye 4248 mapaundi, chimwe chezvinhu zvinoverengeka zvakaputika zvakaputika zvakagadzirwa naSylvanus Sawyer; zvisinei, hapana chimwe chezvirongwa zvake chakagamuchirwa zvakanyanya. Chombo chorudzi urwu chakaedzwa paFort Monroe muna 1859, uye zvombo zviviri zvakasiyana zveSawyer, pfuti ye24-pounder uye 3.67-inch, yakashandiswa muKukombwa kweRichmond kwa1864-65, kunyange zvazvo 24-pounder yakaputika pamutambo wegumi uye pfuti ye3.67-inch yakashandiswa zvishoma. Hondo yeHampton Roadskwakaitika paSewells Point pana March 89, 1862. USS Monitor yakatarisana neCSS Virginia panguva yeHondo yeIronclads muna 1862. Pfuti yaSawyer yakapfurawo paVirginia, kunyange zvazvo isina kukuvadza nhumbi dzokurwa nadzo dzesimbi. 