For the MH60 demo mission, well, you have a problem with the amount and type of torpedoes. You have only three (If you replace the Penguin with another torpedo, Mk50 recommended), and they're short-ranged. Usually one is enough if you use it well, but no guarantees if he's using countermeasures.
My recommendation: at the start of the mission, select a torpedo on the weapons screen, enable range zero, set to circle instead of snake. Assign it (without any target selected). Then, locate the sub with dipping sonar and/or bouys. If you have a good estimate of his location, fly over it with the MAD sensor. Once you hear someone announce the MAD contact, drop your torpedo. This way, the short range of your weapons doesn't matter, and he doesn't get much reaction time. The only risk is a very close neutral ship that might be picked up before the sub. There are times when using the snake option with a pre-enable run will be useful (such as when you're attacking something with short-range surface to air weapons that prevent overflying), but usually dropping a circling torpedo very close is good.
|