Could the Soviet Union afford a Stalingrad-centered fleet without sacrificing the army or air force?
Short answerIt had more shipbuilding capacity than Germany had for Plan Z, but the program would impose economic costs and remain subordinate to army and air-force priorities; prestige after Tsushima nevertheless made a strong navy politically defensible.
NotesThe answer distinguishes Stalin's naval program from Germany's Plan Z by arguing that the Soviet Union possessed more of the infrastructure needed to attempt the ships, especially after its territorial expansion. Economic costs would still surface, but a centrally directed dictatorship could defer them for several years rather than make them disappear. The army would remain the first priority, followed by the air force and then the navy. Naval prestige nevertheless had political value because Soviet narratives connected the old regime's collapse with defeat in the Russo-Japanese War and the loss at Tsushima.