A fascinating update and commentary on the naval situation in the Persian Gulf / Straits of Hormuz:http://www.naval-technology.com/feat...ind-hyperbole/

Curiously Iran Revolutionary Guard Corps Navy (IRGCN) has once again taken a leap forward by buying hi-tech equipment, this time from the UK (a story I'd missed) and in the past we had the Swedish Boghammer sale.

Their goal is to replace their underperforming Chinese and North Korean vessels with indigenously produced FACs to participate in 'swarm attacks,' a tactic in which waves of small vessels attack a larger slow capital target overwhelming it with small arms / RPG / missile fire, or even ramming it in suicide kamikaze-style attacks.
Oddly the article skims over the positioning of a large number of SSM, one having such a large warhead it would destroy a supertanker's superstructure.