[THE_MASK]

Press C to display the compass . Steer by clicking on the compass .
Run down the stairs or teleport to the radio room and ask the Josef the chief engineer to submerge or crash dive or whatever you want to do .
Lets say you want to dive to 50 meters . Click on dive to 100 meters and then when at 50 meters click on maintain depth etc .
There is no load game , just continue campaign . It just makes it a bit more tense if you know you will get an auto save game anytime and that will be your only save .
I have not had one corrupted save in 3 years of playing SH5 . If the game ctds I have always been able to load the last save .
Also I understand that sometimes language barriers are difficult because of the complexity of the game and instructions .