Reuters : U.S. may offer Israel powerful new missile radar
Talkback
Title:4 Fortuna - Iran has Subs
Name:Mark of Lewiston
City: LewistonState: USA
Your might want to check out Janes Fighting Ships. Iran already had submarines, and supersonic cruise missiles and even jet torpedoes. Some is homegrown and some is purchased. Their diesel electric boats can sometimes be tracked, but not always.

http://www.globalsecurity.org/military/world/iran/ships.htm