An all-diesel plant removes boilers, steam turbines, and separate fuel demands from the mixed system. The resulting changes to machinery volume and weight distribution could allow the stack and superstructure to move aft. The freed forward space might support a fourth triple 5.9-inch turret, producing a twelve-gun cruiser, or improve the ship's usefulness as a minelayer. That armament is a plausible design consequence rather than a guaranteed outcome, and the engine change does not create more dockyards or personnel.
Notable Point · 17:13-21:19
A diesel Königsberg could free space for a better cruiser layout
Removing the combined steam-and-diesel plant could shift machinery and superstructure aft, potentially making room for a fourth turret or a more useful minelayer-cruiser design.