As for TKMS failings in submarine production? The company which has successfully delivered about 40 submarines in the last 40 years is having submarine building problems? They aren't. I can't find anything that says their submarines are having QC or build issues.
While i had a preference for the KSS-III batch II, I also think the
TKMS Type-212CD has the earmarks of a great submarine. I do believe that.
I am encouraged by this not being a TKMS export submarine, but rather this being the same submarine being delivered to Norway and Germany.
Why do I say that?
While ThyssenKrupp Marine Systems (TKMS) is globally recognized as a premier designer and builder of conventional submarines, the initial deployment of the Type-214 export class highlighted that even top-tier shipbuilders, such as TKMS, can face complex first-in-class MAJOR teething issues.
During sea trials in the mid-2000s, Greece's lead boat,
HS Papanikolis, suffered from severe surface stability flaws—including excessive rolling in rough seas — alongside premature propeller cavitation, periscope vibrations, and overheating within the polymer electrolyte membrane (PEM) hydrogen fuel cells of the Air-Independent Propulsion (AIP) system. TKMS eventually resolved the hydrodynamic balance issues by installing a 21-ton structural modification to adjust the vessel's center of gravity. This caused major contractual issues - needless to say.
South Korea’s domestic build of the class (the KSS-II or Son Won-il class) also encountered distinct, systemic propulsion defects rather than hull-form instability. The fleet was severely impacted by manufacturing defects in the Siemens-supplied inverter modules, where a breakdown of cable insulation coatings led to degradation, rust, and catastrophic cooling fluid leaks that flooded the electronics on boats like the
ROKS Jeong Ji.
Because these highly proprietary components could not be repaired locally due to strict technology-transfer limits, the modules had to be uninstalled and shipped back to Germany, creating lengthy operational bottlenecks before the fleet achieved full maturity.
I note those were relatively early TKMS Type-214 deliveries, and also note the TKMS Type-214 was an export submarine, not intended for the German Navy.