An Olympic-derived warship would be an expensive cruiser

Would a warship based on a cut-down Olympic-class hull be a cruiser or a small battlecruiser?

A cruiser, and a very expensive one to operate.

A hypothetical warship uses a cut-down version of the Olympic-class liner hull. The proposed ship would be a cruiser and very expensive to run. Its machinery and armament remain unspecified, so this is a judgment on the hull concept's likely classification and running costs.