Irans choice of the AK-630 in its Kamand modification may looked like a low-end solution to some, considering the Russian Kashtan, Chinese Type 730 or even U.S Phalanx.
However it was a choice, a whole generation ahead of those systems: Same stopping power or better (Phalanx) but more simple due to the use of powerful main array multi-beam AESAs.
The new trimaran class has from some attack vectors 3 x 30mm Kamand and a 76mm gun to put a simultaneous, massive burst of fire in front of the attacking weapon.
Soviets knew that many AK-630 is the best solution, but no multi-beam radar was available back then to make the solution simple and cost effective.
Irans choice was a brave one and a proof of their smartness.
A 3000 ton, ~100 SAM anti-air vessel is again a very cost-, size-, and crew number effective solution to protect a group of the to come 6000-7000t destroyers and "aircraft/helicopter/UAV carriers".
We also see:
- An AIP concept based on the Sterling principle apparently, for the Fateh and later Besat.
- Change of Besat to a sub with VLS.
- VLF communication system for new submarines.
These are some of the critical subsystems that need to be mastered first, before moving ahead.