Sink the Moskva. There are 2 versions of the mission. The Laser Guided one is incredibly hard, but it can be done. See the video:
https://www.youtube.com/watch?v=87cuKKp51YQ
Mission 1: GPS guided Bombs - Help From Submarine
This one isn't too hard. Wait for the Moskva to stop and plug in a manual Wypt at its precise location. Don’t use Wypt 1. It’s only meant to be an approximate location. Enter it in your HSI manually on the Data page with a precise location. Stay below 30ft until you're in range to drop the bombs, lift up to about 100ft, drop them and turn away hard back down to 30ft Altitude. Repeat until the Moskva is sunk (the torpedo from the submarine doesn't hit every time, but the Moskva will stop anyways).
Youtube Video:
https://www.youtube.com/watch?v=7O0yIRJF86o
Mission 2: Laser Guided
Set up your bombs on the carrier and watch the air defences take out the anti-ship missiles while you wait for the laser to warm up. Launch, stay under 30ft altitude and take out the Moskva with laser guided bombs. (You'll blow up on the carrier sometimes at the beginning if the air defences fail. Just restart). This is very hard & frustrating. It took me many tries to figure out how to get them to hit at such a low altitude. It can be done. You can see how I did it below.
Youtube Video:
https://www.youtube.com/watch?v=87cuKKp51YQ
*Don't land on the Carrier while the Moskva's air defences are still active. If its radar is still spinning, it can still shoot at you!
*The Included Tracks do not use the Supercarrier Update so they probably won't Replay correctly if you have it.
