Submarine PC key controls

[Nukdar]

Cant ascend or go below with the submarine, dont know which keys are, I pressed the whole keyboard and any key is working to descend or ascend. Any help? Thanks

[frozentide]

The controls are listed (or should be) right there on the screen, from what I recall. Control to descend, shift to ascend. User your mouse to look to your lower left within the submarine to see the readout of how fast you're going etc. There's another sheet to your right which describes more about the sub.