I wasnt paying attention to the fact after Id gotten away from a convoy my sub was leaking a little, so I went to TC at periscope depth and BAM before I knew it I was at 150 meters and dropping like a rock. I was in a XXI with 60 percent hull integerty, so I was deperatly assigning people to my DC section and trying to de flood the sub. I went down too about 210 meters before I was able to start rising. I then limped my way back to base while evading the everything.
Worst thing is this was all caused because I got cocky in a storm and a S boat landed some shells into me with his deck gun, while I couldnt fire mine due to the storm. That Sboat is a hacker