Would a diesel-electric surface raider be a good German design, and how fast could it be?
Short answerIt is a plausible idea with useful layout flexibility, but its speed depends on the power and resources Germany commits to the design.
NotesDiesel-electric propulsion separates the prime movers from direct mechanical alignment with the screws. That flexibility can improve internal arrangement and make an unconventional surface raider feasible. Electric-drive ships had already demonstrated relevant advantages, and Germany explored several options. The attainable speed is not fixed by the concept alone; it depends on money, machinery power, weight, and the scale of the development program.