There is this scene in Das Boot were one of the crew members says that they are going deeper than the sub is rated for and the captain says "don't worry German engineering".

German engineering like in the new Berlin airport? Or perhaps the new F125 frigates?

https://www.dw.com/en/berlins-new-airport-finally-opens-a-st...

https://www.reuters.com/article/world/late-and-overweight-ge...