Iran uses upgraded Ashura-class fast attack boats to control the Strait of Hormuz.
These boats are armed with IRGC-made heat-seeking Qadr missiles with a range of about 25 km, which are very accurate to hit their targets precisely without relying on optical systems and even without relying on GPS, instead they use thermal guidance systems. No electronic warfare system can prevent them from striking their target.
The boats can travel over 90 km/h and US naval forces are weak against it. They can also carry anti-drone and anti-helicopter missiles.
According to Shadloo, these boats have not yet been used in combat, the IRGC Navy is so far relying more on attack drones and some cruise missiles.