stuck on the bottom

[jangles]

Hi,

was on a patrol last night, just west of the english channel , had just sunk a freighter and was moving northwards when the shout went up that a merchant had been spotted by the bridge.

I go up and sure enough she is sitting dead ahead of me at quite long range , so I increase the speed and attempt to catch up.

just as I am in range and about to fire the deck gun, another shout goes up for a warship spotted, to my dismay I see a british torpedo boat closing in at around 3000m , I immdiately give the signal to dive to 60m , but just as I am going under she gets a few shots on me and I take some damage.

I then start to go down, further and further , past 60m , until I hit the bottom at 120m .

I check the damage screen and it said "minor damage to bow quarters" , "damage to Aft battery". I give the order to go to 60m but the boat does not move.

In the end the only way to surface was to blow ballast , I then got ripped to pieces by the torp boat

why was it that I sank like that? and how come I could not get the boat off of the bottom?

I did repair all the damage whilst I was submerged.

Thanks,
Jangles