 Nyorera kupfuurira kweiyi ndima - Panguva imwecheteyo, Tsarina Catherine Mukuru, achishaya ngarava dzakarongeka dzeRussia muGungwa Dema, akaronga neCount Alexei Grigoryevich Orlov kuti vabvise nhamba huru yengarava kubva kuBaltic Fleet uye vaise kuMediterranean. Russia yaikarira kuti vaizorwisa Strait yeTurkey necheshure, uye kuti kuvapo kwayo kwezvikepe zvengarava muAegean Sea kwaizoparira kumukira kweGirisi. Iri Boka reMediterranean rakanga richangobva kuumbwa, rakatungamirirwa naOrlov uye raitungamirirwa naAdmiral Grigory Spiridov, rakabuda muCopenhagen musi waSeptember 23, 1769. Pakazosvika March 1, 1770, boka rokutanga rakanga rasvika kumaodzanyemba kweMorea, uko kumukira kwaOrlovakapukunyuka. Izvi zvakateverwa nokuputika uye kumhara kwemauto munzvimbo dzakasiyana-siyana munharaunda yacho mumwedzi yakatevera. Musi wa7 Chikunguru, ngarava dzeTurkey dzakaparadzwa muHondo yeChesma, iyo yakaparadza Navy yeOttoman ndokupa maRussia kutonga kwehondo yeMediterranean kwehondo yose. Ngarava dzeTurkey dzakapukunyuka dzakadzokera kuDardanelles. Rear-Admiral John Elphinstone akaronga kurwisa zvakananga Constantinople, asi panzvimbo pezvo akagutsikana naOrlov kuti avhare Straits neuto rake, apo vamwe vose vechikepe vakaenda kunorwisa kuchamhembe kweAegean. 