A modern cruiser or battleship would combine railguns and hypersonics

What would a modern cruiser or battleship look like?

A Zumwalt-like design with railguns or another large kinetic-energy battery and a substantial hypersonic-missile battery.

The proposed cruiser begins with a Zumwalt-like design and adds hypersonic weapons. Scaling that concept toward a battleship provides room for a larger railgun or other kinetic-energy battery alongside a substantial vertical-launch system. The distinction between cruiser and battleship is mainly one of scale and magazine capacity within the same technical concept. This is a speculative description of a leading-edge combatant rather than a ship already in service.