Exactly Forbin.Hangar for 2 helos enough rare only 052 can host same number.
it is good to see the two hangers on the 167:
...and on the 112 and 113 (Type 052):
But that's it! For the PLAN, those are the only ones.
I think one of the weaknesses that the PLAN has in terms of ASW is the lack of two helo hangers on such a vast majority of their combatants.
If you look at the major combatants, particularly with all of the new ones, you find:
10 x Type 053H3
02 x FFG Type 054
25 x FFG Type 054A
That's 37 Frigates...not a single one of them can carry two helos.
01 x Type 051B (two helo hangar)
02 x Type 051C
04 x SOV
02 x Type 052 (two helo hangar)
02 x Type 052B
06 x Type 052C
11 x Type 052D
That's 28 destroyers...only three (167, 112,and 113) can carry two helos.
So, with 65 very decent major surface combatants (and more building), you have only three that can carry two helos.
Look at the US.
The OH Perry Frigates are about all gone now...but every one of those ships could carry two ASW helos.
Now they are being replaced by the LCS...and every LCS can carry two helos.
06 x Freedom LCS (two helo hangar)
07 x Indenpendence LCS (two helo hangar)
With destroyers:
28 x Burke I and II (no hanger, just pad for refueling/rearming))
37 x Burke IIA (two helo hangar)
02 x Zumwalt DDG (two helo hangar)
Cruisers
22 x Ticonderoga (two helo hangar)
So the US Navy has 102 major surface combatants launched right now (and more building). Of those, 74 of them can carry two ASW helos each.
It a HUGE advantage when it comes to ASW warfare...as well as SAR, ASuW, VREP, Patrol, etc.
With two, you can always have them out there...as one nears bingo fuel, the other takes its place.
For ASW this ability to continuously prosecute targets is a key advantage.
LCS Hangar
Burke Hangar
Tico Hangar
Zumwalt Hangar