 Mazita akasarudzwa nokuda kwezvikepe zvina zveBatch 3 akanga ari musanganiswa: maviri, Cornwall uye Cumberland, akavandudza mazita eCounty-class akambotakura zvose neHondo Yenyika Yekutanga-nguva yezvikepe zvehondo, uye neHondo Yenyika Yechipiri-nguva yezvikepe zvehondo. Imwe Batch 3s, Chatham uye Campbeltown, aiva mazita eguta, wekutanga achidzorera zita re1911 rakareruka, uye wekupedzisira achiyeuka mukurumbira wekutora chikamu muSt Nazaire Raidmuna 1942; zita reHMS Chatham rakasarudzwa semutero kuguta reMedway, uko Chatham Dockyard, yakagadzwa muna 1570, yakanga yavharwa muna 1984. 