You might consider what a sea-going coast defense ship might look like. We explored some concepts in this thread
www.tapatalk.com/groups/alltheworldsbattlecruisers/chilean-bc-and-coast-defense-ships-inspired-by-for-t8706.htmlstarted by Force H over on the BC Own Designs board.
Alternatively, perhaps something like the Ansaldo coast defense ship design submitted to Sweden, IIRC:
One advantage of being allied with the UK and the RN, if Asturies undertakes any modern coast defense ship construction in the 1930s, the ships could be armed with the new built-up Mk XIV 12in gun
www.navweaps.com/Weapons/WNBR_12-50_mk14.htmAnd Vickers had already designed a triple turret for this weapon.
How does Asturies navy fight? Are the coast defense ships fighting from behind minefields? (the Imperial Russian dreadnoughts have the layout they do for this reason) Do the provide covering fire for destroyers, torpedo boats and MTBs launching torpedo attacks? (similar in concept to the Dutch cruisers' role in the NEI)
What about naval aviation, maritime patrol and reconnaissance? Is there a naval air service? If so, given the proximity to Spain and France, who is responsible for air defense over naval bases?
what about minelayers, minesweepers, auxiliaries?
More questions than answers, but my additional thoughts....
Regards,