Hints: You can press R to dive/undive, C to activate active sensor, WASD to move and X to stop When being chased by homing torpedos, close activate sensor while dropping sonar decoys to dodge better.(at 5:40, if you close it, it would only have to drop one of that decoy(I forget its name, but it's weaker than the other one for sure) to dodge all of those torpedoes, if I remember my experience correctly)
you are an absolute menace to the pirate fleet. also, if you want to avoid more tracking torpedoes, you can turn off your active sensors to lose them easier.