Interesting.
From Henri K blog.a bigger clearer view of the island
Each new aircraft carrier has a design optimized for its island, on the one hand to increase the useable area of the bridge, and on the other hand to improve the electromagnetic compatibility and flow. Here is the one for the next Chinese CATOBAR (a few details) ...
Keel laid 2017, we will probably see identified module in 2018 and launch in 2019
Sea trials in 2020 and handed to navy in 2021
They then lay keel for CV-19 in 2019 repeat the process and by 2023 that’s 5 years they have the following
CV-16 and 17 STOBAR with 24 aircraft a peice
CV-18 and CV-19 CATOBAR conventional with 36 units each
Total with 4 carriers 120 aircraft
Post 2023 it’s CVN-20 and CVN-21
48 aircraft each