11 - Black Cats
*NOTE: You can aim like normal. And the countdown to switch guns will only automatically switch you, so by pressing it fast you get to the gun a slight bit quicker.*
This first segment only requires you to follow a few rules. First is to switch to a gun when told. Second is to take out all 15 PT boats escorting the ships. And finally is to aim for the ships when there is nothing else to attack. It's wise to aim for the backs of the PT boats, and on the ships there are fuel tanks that seem to help you cause. It's real simple, just follow the guns you are told and take out the small boats first. I'm more than sure that your final pass is when you actually take out the ships. Also, don't aim for the planes, they are your allies.
Next you must defend against Japanese Zeroes, or the tiny enemy planes. There are waves that sweep in front of you, then you simply follow the clock directions to track down the incoming trios. Just aim in their general direction as you can't really lock in on them and you'll do okay enough.
*NOTE: Aim for the white planes, not the blue ones.*
Soon you'll approach your own fleet of ships. You can hit a few white planes as your rig goes into the water; should be one kamikaze to the right. Once in the water you will switch to a side gun where you can rescue dudes out of the water when not firing. First take care of the two PT boats, rescue a guy, then the incoming planes, then the PT boats to your right, but you also need to pop some shots at the incoming planes in front of you, then rescue a dude. Then there should be two more boats on either side, pop a few planes, and rescue another.
After that you will move to the front for one final go at some zeroes. I really can't help you locate all the planes or help you shoot at them. All I can say is that you need to fire at all the planes you see and keep your eye out for the ones in front of you that come directly at you. After a while it will end with success.