Beginner Questions

[Aras]

1. I am not sure how long they stay open, I generally open them just before firing the torpedo. You can check if they are open or not from 3 places.
a. Go to the conning tower from Command Rooms. Turn around you will see switches representing torpedo tubes.
b. Right click Weapon Officers face from left bottom, you will teleport to his station. Turn around, again there are switches representing torpedo tubes.
c. Visually By the way, for way 1 and 2 you may interact with the switches.

2. They will start to ping if they suspect your presence. That may be caused by propeller sound or just a crew dropping his wrench etc... Remember the scene from Das Boot where Number 2 makes a joke about silent running.

3. First they will depth charge the last place they heard you. Eventually they will try to depth charge blind some other locations around to find you.

4. Yes, you may see them in game however I think you may not destroy it (Remember the scene from Run Silent Run Deep where US submarine destroys the net to escape Japanese harbour). Stay away from them. They are located on harbours. Stay away from port raiding until you really know what you are doing. If you hit one, DO NOT change your heading. Run your propellers backwards (Back Emergency)

5. I have experienced the same thing as well. I presume it’s the consequence of the blast. Do not forget that a depth charge may cause some damage via Shock Wave.