This is story related and cannot be missed.
This achievement can be obtained on mission 16.
After the Ace battle at the start of the mission the rest of the mission will be about working towards destroying the Musashi. These are the objectives that will lead to the destruction of the Musashi.
-Fly to Musashi
-Bonus sink two escort ships
-Suppress starboard AA
-Suppress port AA
-Suppress all AA guns
-Destroy Musashi's bridge
-Sink the Musashi
This achievement will Unlock when the Musashi is destroyed