Go this thread is full of an even higher level of uninformed dross than normal for Pprune.
A Kilo is not big. It is really small, and ideal for the area in the right hands and serviceable.
The kill radius of a bucket of sunshine is absolutely tiny.
I suspect that is why they were withdrawn. They were simply not as effective as Active/passive ASW plus a torpedo.
I reckon you would need thousands if your approach to sweeping the Straits of Hormuz was to be successful using a random scatter technique.
Seriously guys, if you have no knowledge at all, why post as if you do?