Iran not only operates Submarines but also builds them!!!!!!
Iran has so far built ~20 Gadir Class sub's
Iran has one operation Fatteh class
Iran has one Nahang class sub
Iran also operates 3 Kilo Class Russian Subs
Iran Sahand Frigate is almost completed & another ship that's a little bit wider will also be completed soon after.
The ONLY part of the Saudi Military that's stronger than Iran's is it's Air Force & against Iran it really doesn't matter because in no less than a day Iran will Drop Missiles on EVERY Saudi Air Force base in Saudi Arabia and not 1 or 2 I'm taking 10's if not 100's of missiles and every Saudi base within 800km will wipe out & every Saudi Air Base within 1500km of Iran will be out of commission for weeks if not months!!!!!! Making the Saudi's incapable of gaining Air Superiority over Iran.
And delusions about GCC states are nothing more than delusions!!!!!!!!!
Kuwait, UAE, Bahrain, Qatar every single one of them when push comes to shove in a war between Saudi Arabia & Iran will run with their tails safely tucked in!!!!!!!!!! Because they know full well that it wouldn't take Iran even a week to flatten their country! All their ports, Air Bases, Power Plants, Oil Facilities, Malls & other infrastructure will all be wiped from existence!!!!!!!!!!