The Type XXI is so bad-a$$!

[Marcello]

Originally Posted by Tonnage_Ace

I only wish that advertised auto hydrophone targeting thingy worked. Apparently the real life thing could shoot underwater without the need for a periscope to get a target solution

The system required the Nibelung to go active, however briefly, and while the few pulses would likely remain undetected it was not an entirely passive system. Also it is not clear whether the whole setup was actually fully operational at the war end. A number of planned "bells and whistles" for the XXI such as Ursel definitively were not.