Just a high-level surface view, but what the PN did in terms of lining up procurement following the collapse of the OHP and Type 214 programs is wild: 8 Hangor (II), 4 054A, 4 MILGEM and there's still more (at least per the 15-16 MoDP year book and statements during IDEAS '16). Relatively speaking, you could only ask "what the heck?!" about the PAF and PA now when they benefit from much more funding and fiscal space.
I believe, and I don't have evidence for this, but its an inside deal with China to protect CPEC access. CPEC will be a critical strategic route for China, that needs to stay open in times of international conflict. China needs the CPEC to stay safe.
Pakistan made a good proposal on how that can be done - and China accepted. Some of these big loans may be written off over time, as far as the big naval purchases from China is concerned. The logical next step should be a mini-SOSUS type system. This would allow SLOCs to remain relatively safe except in a full-blown conflict involving the US.
In the event of a showdown in South China Sea and / or a retaking of Taiwan, the Malacca straits will be closed. China would suffer grievously. If PN ships protect the CPEC, it will be one of the few means of connecting China to much of the rest of the world via sea.
It makes no sense for Pakistan to alone foot the bill for this defence of the CPEC. However, it cannot be shown that Pakistan is acting as a proxy. So, one way around this is to give long-term softloans and then quietly write-off a solid portion of it.
I seriously doubt PN has a lead on PA and PAF on procurement, other than this issue. It has traditionally performed the worst in war. The cream of the armed forces intake goes to the PAF / PA. And KSEW is a meaningless drain on resources, and doesn't hold a candle to Kamra.
PN is running on procurement alone. It has no meaningful industrial strategy. Its ships, while increasing in numbers are going to be mediocre - without meaningful air defence on a host of boats. From the Azmat, with a single CIWS, to the Ada, with another single either CIWS or PDMS. F-22Ps with their known and serious issues. Four 54As, wonder what pandora's box is going to come out of that.
A submarine building capability that cannot build submarines. Or even mini-submarines. A ship building capability that cannot even design a tug boat. Endless ToTs, making a fool of the public. If it wasn't for NESCOM, there literally wouldn't be any naval systems to show.
Of all the things, what strikes me most is the inexcusable mismanagement and lazy and incompetent approach to running KSEW.
Having said all this, PN's officers and men are competent, technically able, and professional. More so than their Indian counterparts, and US naval officers have attested to this.