"Sir, our carrier is no match for theirs. We should avoid it at all costs."

Nah. 【「セイバーオルタ」】 already had the shell, so this video is like "useless"
See him through the fog. Aim at what you see. Aim a little bit down. Predict their direction. AND SHOOT.
When you get rewarded with the sound of grenades hitting metal: Keep shooting at it.
As soon as you get a clear vision of the enemy carrier shoot its main weapon.
Take the secondary weapons out after that.
Then destroy their brigde. Does not take you 5 minutes or more than 5% damage like in the video.

@grissolkiller: but ammo is not enough from one manta, isn't it?

if you want to do it easier take a chopper low ride behind there carrier if you stay low enough they turret cant get you