Why Greek Radetzkys would become convoy escorts

How would Greece use three Radetzky-class semi-dreadnoughts?

After modernisation, they would probably serve as convoy escorts, while Tegetthoff-class dreadnoughts could join fleet actions.

Capability separates the wartime use of the Radetzky and Tegetthoff classes. Greece would modernise three Radetzky-class semi-dreadnoughts, but their likely role would be convoy escort. That resembles how Greece used the older capital ships it actually possessed. Modernised Tegetthoff-class dreadnoughts would offer enough fighting power for fleet actions.