A postwar successor to a coastal-defence ship

What ship type should succeed an aging coastal-defence class around 1951?

A compact 6,000- to 7,000-ton cruiser-like coastal-defence ship, probably sourced from a builder such as Sweden.

The successor would retain the coastal-defence mission without reproducing the old hull exactly. The proposal envisages a couple of cruiser-like ships of roughly 6,000 to 7,000 tons each. Sweden is suggested as a plausible supplier. The choice of builder would determine the weapons fit, with a combination of guns and missiles considered possible.