10th mission of white sharks -> how to do it?

In 10th mission I have couple submarines against all possible enemy turets and ships and options to win this. Enemy is everywhere and my goal in on oposite corner of current area. I have not enought forces to make even half of distance to my target. Game control is too shity and practicly not allow to micro managment so I cant use repair boats. Cant fight my way, cant sneak in, cant hit and run, cant drag all the turrets at my side.
How to pass it?

My strategy is to use the marauder to capture all of the military structures just in the narrow corridor just northeast of your position. Meanwhile, progressively lay down mines in that very corridor. Use a small, fast sub (Hunter or Sentinel) to bait the subs that are hiding at the other end. They'll run into a minefield guarded by heavy lasers.

Remember that you can use the rep-subs to repair your subs.

What I ended up doing was using the marauder to capture one of the sub-centers in the base at the end of the corridor, which I then used to produce a Constructor, which was invaluable in making it to the North. However, every time I would reach the north, the game would report, "Critical structures have been destroyed," and it would be Game Over. I never figured out what went wrong. I suspect that I was not *supposed* to capture that base, nor was I *supposed* to have the ability to construct new structures. To this day, I have not completed that mission.