 Ramba uchiverenga ndima ino - Ngarava dzehondo dzeJohn Ericsson dzakagadzirirwa kusangana nezvinodiwa neSweden neNorway Navy zvengarava duku, dzisina kudzika dzakapfekwa nezvombo dzinokwanisa kudzivirira mvura dzegungwa. Kurwisana pakati pevarwi veAmerica nevakuru zvikuru munguva yeHondo yeHampton RoadsMuna 1862, Sweden yakafarira zvikuru rudzi urwu rutsva rwechikepe chehondo, sezvo rwairatidzika kuva rwakanakira mabasa okudzivirira mhenderekedzo dzegungwa. John Ericsson, mugadziri nomuvaki weMonitor, akaberekerwa muSweden - kunyange zvazvo akava mugari weAmerica muna 1848 - akazvipira kugoverana magadzirirwo ake nevaSweden. Vachipindura, vakatumira Mutevedzeri John Christian dAilly kuUnited States kunodzidza kugadzirwa kwechiratidziro nokuvakwa pasi paEricsson. DAilly akasvika muna July 1862 uye akashanyira michina yokugadzira zvombo, nzvimbo dzokugadzira zvombo, uye akashanyira ngarava dzakawanda dzakanga dzichivakwa. Akadzokera kuSweden muna 1863 apedza mifananidzo yeMonitor - rudzi rwechikepe pasi pekutarisirwa kwaEricsson. 