HH,
Iranian navy has very very limited capability anyway
Utter bolleaux. They have some of the best DE SSK's in the world and a force of midget submarines armed with very capable torpedoes. Add to that the numbers of FAC/FIAC they are capable of launching and they pose a huge threat to coalition ships in the area, made even worse by not feeling shy about using them.
Have a look in the latest version of Jane's.