Happened to me too.
Notified of attack, and on station, with IJN Task Force reports coming in.
But the only thing we encountered was a hornets' nest of Aircraft.
"Enermy aircraft spotted!"
--> Dive to Periscope Depth ( those Zero's sure can carry a bomb load )
---> Add, Rinse, Repeat
__________________
"
All Ships can dive, but only Submarine's surface!"
MODS: KillFlags - Elco PT109 - AOB Attack Course Tutorial