The technical criteria lead back to policy. New systems can add further crew and accommodation demands, but the decisive constraint is normally the budget available when the decision is made. That budget choice depends on political purpose: whether government regards the navy primarily as ceremonial presence, industrial employment, or an essential instrument of national security. Replacement is therefore a strategic and political decision as well as an engineering calculation.
Chapter · 40:10-41:02
Budget and political purpose decide the final choice
End with the governing choice: after the technical analysis, funding and a government's view of naval purpose determine whether to upgrade or replace a class.