This whole thing is a planned US media release to scare up fear of Iran. You can trace every story about it to government news releases from the Secretary of Defence and the Navy. This kind of thing actually happened many times during the first Gulf War, and wasn't even important enough to be mentionable.
LMAO. 5 speedboats take on 3 warships. I'm sure their maneuverability and AK 47s (hell, I'll actually stop being patronizing and say they have an RPG or two) will give them an unsurmountable advantage in battle. Look at the Iranian president's angry war face: http://img100.imageshack.us/img100/5647/irannukeapr13web8qs.jpg
Semi-mutually (meaning Iran probably wouldn't be able to destroy the US COMPLETELY) assured destruction is poor Iran's only chance...