I agree. You do not need a large airframe like the Z-18 for such tasks.Strange, there should still be Z-20 anti submarine and search and rescue types here; The Z-9 search and rescue model may take some time.
It can be quite certain that this modification is to adapt to aircraft modifications such as J-35 and Kj600.View attachment 127730View attachment 127731Seems to be the modified wheel chocks of the Liaoning ship (CV16)? Source: Weibo@恒苏Actline.
Of course, it is still in doubt whether the Kj600 can land on the Liaoning and Shandong ships, although the E-2C, similar to the Kj600, can theoretically take off by sliding over the deck in US military testing. But whether it will be adopted in STOBAR is still unknown. Related content can be discussed at Kj600 thread.It can be quite certain that this modification is to adapt to aircraft modifications such as J-35 and Kj600.
Another image of a full deck. All three launch spots occupied, blast deflectors deployed.