I mean, really! Dumping little white boxes in front of a warship, trying to make us think they were mines?
Give me a break!
It might be worth your while to have a look at Galrahns blog site for some of the opinions provided by Naval professionals.
At the range that they were allowed to close, that left the USN commander with a 12sec OODA loop.
I am not second guessing any CO out there, as it is hard to make the right call. That being said, in an email exchange with MTH, I did a little play math. For those who don't spend much time on the water on anything larger than a Ranger, 200 yards is CLOSE.
200 yds is very close. If he can get 30kt closure, that is what, about 12 seconds until contact? 12 seconds on a bad day can get ugly. 2 to make the call. 2 to say "oh shi'ite!" 2 to get the command out of your mouth. 4 seconds for it to get passed to and processed by the man pulling the trigger. 2 seconds to make contact on the boat (I am being optimistic as this is all visual aiming at this point and is 50 cal.). That is, well, 12 seconds. Boom.
IMO, those Iranian boats were lucky that the USN was not trigger sensitive. I'd be betting that a Chinese or Russian commander under similar circumstances would be falling back on self protection decisions a whole lot sooner before the 200 yard threshold was reached.
Under normal circumstances, any boat that is a latent threat and closes within RPG launch distance is about to forfeit its future. I'm aware of conditions where a 500 yard perimeter would be the response failsafe arc.