A submarien evaded radar?? pretty easy since it is SONAR underwater, and RADAR above water. In the details of this story just shows it is a simple lie. Just try hanging onto a ship that is moving,, the pressure wave alone will rip you off, and the sonar used, at such a close range will turn your internal body structure into jelly.
Firebomb thrown during demonstration in northern Israeli town of Umm al Fahm (Haaretz)
from the article: Iran Revolutionary Guards: Unit engraved emblem on U.S. ship