Historically submarines had small caliber Anti-Air defense to repel recon planes...
No gunner... huh.Imuya! Anti-air equips?Do you have anything, Goya?Oh crap!?Shoot him down dechi!This is bad, isn't it...Anti-ground, anti-ship, anything's fine dechi!We've been totally boxed in dechi...
What can we do...Just a single recon seaplane dechi!If you fire, it might hit!If it can go skyward, shoot it!F-For now, we need to get away from here dechi.That's right! If we dive, then...I would if I could!All I have is torpedoes!None!Recon plane dechi!!