Mezue ahịrịokwu na-esonụ: E guzobere Dnieper Flotilla na June 1931, ma gbasasịa na June 1940, ụgbọ mmiri ya na-ekesa na Danube Flotilla ọhụrụ e guzobere (ebe ọ bụ na, ya na
Soviet na-arụ ọrụ na Bessarabia na Northern Bukovina ndị Soviet nwere oke na Danube) na Pinsk Flotilla. Ndị agha Germany na ndị Romania weghaara osimiri Danube ná mmalite nke mwakpo ha wakporo Soviet Union na 1941, e bibisịkwara Ụgbọ Mmiri Danube na November 21, 1941.