Thank you! I enjoyed the holidays with my friends. (^o^)
The drawing 1,2, and 3 are of the identical ventilator.
The captions in Japanese are ;
Fig. 14. Warship Mikasa's port-forward ventilator of Engine room, which was damaged at the Battle of Yellow Sea, 10th, August.
1. Looking forward (in word-for-word translation, "Looking from aft part")
2. Looking to port. ( "Looking from starboard")
3. Looking to starboard. ( "Looking from port")
So, we have to check not only these drawings, but other photos, official drawings (if they exist), etc.