Had to post a link to this Navy Recognition post because I wanted to pass along the photo above, that accompanied it.
Lots of old timers will recognize the boat as the same class as the USCG 95 foot Cape class that were replaced by the 110 foot Island class. The US built a number of these for export. Four were given to Iran in the mid 50s. There were similar vessels derived from the design that followed. Iran got some of these as well.
For more information on the Iranian Navy and the Islamic Revolutionary Guard Corps Navy link here.