@Veshv
Hachina was surprised that it missed too. Referee Mogami seemed to think that Oofuna's attack should've went through, but the Captain did something to prevent it. So two things were off about that attack, Oofuna/Hachina has some sort of information/cheat going on, and the Captain one-upped them?
One thing I was thinking was something like Hachina saw some of the captain's placements through the camera, but perhaps the Captain's screen was rotated so the information was incorrect. But that would mean his two ships got hit coincidentally, which seems unlikely, so I don't think that's it.
Hm... some sort of method to see the captain's ships, but at the same time, the captain was able to prevent some of his placements from being leaked. In the first place, it didn't seem like the captain did much of anything in terms of actual actions so far. Very mysterious so far.
edit:
Rereading it, Voja just came back to the room in this chapter and handed the Captain something. I didn't even notice when he left, but perhaps he did something while outside the room?