The German word for a "submarine" is "U-Boot", 'Boot' is pronounced as 'boat'.
People from Germany are called
Germans - Deutsche,
German - Deutscher (male); Deutsche (female)
Das deutsche Volk - the German people
German subs are known as Unterseeboote, U-Bootefor short.
U- Boats
U-boats, packs of German U-boats searching for American ships were called wolf packs
It was called the Lusitania
German subs were looking for targets; just like the Japanese subs were off the US west coast...looking for targets.
Operation Deadlight was the scuttling in deep waters of most of the German subs. So a LOT of German subs were used there to be sunk. The Navy did retain a number and used most of them for target practice later on. Some lived on to be museum ships. But the sheer number of the German subs captured meant scuttling was the only option: the Allies were already waist-deep in surplus ships and subs themselves and many of those were scuttled or scrapped as well.
Most subs that were lost we're on Germany's side because they employes the most subs, and after the code was broken subs began sinking on the German side routinely.
PUSH
Same as subs from other nations, only the markings (words/numbers) were in German.
126 your welcome
Sonar.
German subs fought "Guerre de Course." (Merchant Sinkings) Japanese subs fought "Guerre de Escadre." (Warships vs Warships) US subs fought both.