Yeah, my point It's a carrier.
It is so 1970's
may be appropriate. Japan is in the same position the UK. Italy were in the 70s. A navy that wants carriers, a government that has a political position of no carriers ever,
So.
1. Approval sought for Helicopter carrying Cruiser/destroyer of c.13,000 tons.
2. When that is given it grows in design to 20,000 tons and it is claimed that operating helicopters will be improved if we move the superstructure over to one side (But it's only for helicopters yes Sirree bob)
3. When built it's found that a with a few structural modifications it can operate combat aircaft. Who knew?
4. After a couple of decades operation it's declared that while successful, the next generation carriers should really be twice the size.
The Japanese had at least one giant submarine during WW2 that had two small bombers on board. The sub could surface, they would attach the wings, and then off they flew.
If you want to be really stealthy and modern, simply combine the best of both worlds.
Light carriers should be submersible. It's not like it hasn't been done before. Either a deck-mounted catapult, a float-plane design, or the use of Harrier-style fighters should be readily available for such a concept off-the-shelf.