those aircraft kick my ass!!! How to avoid them?

[FPSchazly]

Yeah, this mission is difficult. I imagine it is quite hard to sink all of the ships and escape with your life. I would just sink as many as you can on the first salvo and then get out of there. It's better than nothing.

An easy way to triangulate their positions is to mark a few active intercepts on each. Since they're not moving before you fire, their position is where the lines-of-bearing intersect in the TMA.

The airplanes are detecting you with MAD, I'm assuming. A submarine is a large enough piece of steel to create a measurable disturbance in Earth's magnetic field, so that's how the MAD works. Dive really deep (>500 ft) to try and avoid it. Although, I think it's really just the AI being able to *cheat* to keep up with the humans. You can shoot them down in Dangerous Waters but not in Sub Command.

Shameless Plug: I've played through this mission on my YouTube channel, you can check out those videos if you wish to see my thought processes.