N'afọ 1906, ọrụ nke HMS Dreadnought mere ka ndị agha agha niile dị ugbu a gharazie ịdị. Dreadnought, site n'iwepụ batrị nke abụọ, nwere ike iburu egbe iri nke 12-inch (305 mm) kama anọ. Ọ nwere ike ịgba egbe asatọ dị arọ n'akụkụ, ma ọ bụghị anọ site na pre-dreadnought; na egbe isii n'ihu, kama abụọ. Ntugharị na 'ihe niile-nnukwu- egbe' bụ nkwubi okwu ezi uche dị na ya nke na-arịwanye elu ogologo oge na batrị nke abụọ nke pre-dreadnoughts ikpeazụ; Japan na United States emeela ụgbọ mmiri nwere ụdị agha yiri nke a tupu Dreadnought, ma enweghị ike ịmecha ha tupu ụgbọ mmiri Britain. A chere na n'ihi ogologo oge nke enwere ike ịlụ ọgụ, ọ bụ naanị nnukwu egbe agha na agha, ma ọ dị irè site na iji egbe 12-inch na-alụ ọgụ. Ajụjụ: Gịnị bụ oge atọ?
ịhapụ batrị nke abụọ