Why did the Allied Navies have such a hard time
stopping the U-Boats?
A
They had never battled submarines before and
did not know how to sink them.
B
The U-boats travelled together in large groups
so that even when one was destroyed many
were left.
They did not have powerful enough guns and
missiles to damage a U-boat.
The U-boats were faster than any other ships
and could spend hours beneath the surface