Total of 6 Z-9's were ordered from China, First was inducted in September 2009
Pakistan version of Z-9 is Z-9EC ASW , configured with pulse-compression radar, low frequency dipping sonar, radar warning receiver and doppler navigation system. Armed with torpedoes.To be carried on the F-22P Zulfiquar-class frigates
i think Pakistan Navy is using 2 types of Allouettes
SA 316B and SA 319B.
SA316 is the same model as Army and Air force are also using.
SA319 is a navalised version of 316, with additional features of inflateable gear and harpoon for shipdeck landing/securing.
the difference is clear in upper snaps. the 2 helos parked with central Fokker are 316 version.