Which boats do you mean, there were many but im guessing you was looking for German U-Boats?
Underseaboats.U-boats
Underseaboats.U-boats
Germany called there submarines U boats
Germany, they were submarines.
It's U-boats!!!!!
U-boats were German.
Yes
The term U-boat comes from the German word for submarine, and it was usually used only in reference to German submarines, and not those of Japan or the US.
See website: Patrol Torpedo Boats (PT Boats)
1,154 were commissioned.
To sink ships.
German U boats