The submarines in WW2 are different from now. I have done research and back then submarines were easily sunk and were ran differently ! How were they ran differently ? Back then in WW2 the submarines used, were smaller ... They were ran by Diesel engines which allowed them to high surface speed and long range, but underwater it was very difficult and the speed and range wasn't the same from out of the water.
Yes
During World War 2, it is reported that over 2,000 variants of Japanese Submarines were used during World War 2. Out of this, it is estimated that 10,000s were likely to be used during WW2.
326
Wolfpack
Underseaboats.U-boats
Both sides, the Allies and the Axis, had submarines when WW2 started.
The British lost 76 submarines during WWII.
Underseaboats.U-boats
52
759
9
Why don't you just Google "World War 1 Submarines?"