How would American shipbuilding change if nuclear cruisers received Aegis in the 1990s?
Short answerThey would create a later replacement programme, potentially producing nuclear-powered Zumwalts with enough sustained energy to make railguns more useful.
NotesThe counterfactual begins by modernizing American nuclear guided-missile cruisers with Aegis during the 1990s, keeping a distinct high-end cruiser lineage alive. Those ships would eventually need successors, making Zumwalt a plausible replacement programme rather than an isolated design. Nuclear propulsion could supply the electrical energy needed to sustain long-range railgun fire. Barrel wear remains real, but greater range and a useful rate of fire could make that maintenance burden acceptable.