I can visually identify one of them as a Hyuuga-class helicopter carrier but I'm not sure which one it is. The submarine is totally arcane to me.

Jemnite said in comment #2562329:

I can visually identify one of them as a Hyuuga-class helicopter carrier but I'm not sure which one it is. The submarine is totally arcane to me.

Might be a Type-093B SSGN along with an underwater drone in the background. Also that carrier look more like an Izumo-class than a Hyuga-class.