Carryover from clockwise propeller torque favoring leftward bias so keep conning tower away from pilots natural inclination to go left
Two starboard conning tower fitted flat tops were Japs thought to deliver a more expedient carrier group two way coming and going flight tack but proved hard to work to effect especially in combat when simply getting guys airborne or refueled or deck cleared made orderly landing and take off patterns of less import
Yup.
The Japs were the *Akagi* and the *Hiryu* both at the attack on Pearl Harbor.
Aside from propeller rotation, pilot inclination to “go left” stemmed from right-handed stick control. In emergency situations they would instinctivly “throw” the stick left rather than “pull” it to the right. (at least that’s how an old WWII/KW pilot explained it to me)