Iran's intends to "swarm" the US Navy with 1,000 heavily armed speedboats in the Gulf

The tactic will be to overwhelm the larger, slower moving US navel vessels and choke off the Straits of Hormuz (in image) where 40% of the worlds oil supply moves through. The Iranian vessels are armed with cruise missiles, mines, torpedoes and rocket-propelled grenades, are up to 23 meters in length and can reach a speed of 100 kilometers per hour. The idea is to surprise and "swarm" large US naval vessels with up to 100 attack speedboats at a time, overwhelming our superior firepower with surprise, speed and numbers.
Meanwhile, A third US carrier, USS Enterprise Strike Group is speeding towards the Persian Gulf: According to DEBKAfile’s military sources, (not always reliable according to my experience):

The US naval build-up off the shores of Iran marks rising military tensions in the region, accentuated by last week’s Hamas victory which has endowed Iran with a military foothold on Israel’s southwestern border. The USS Enterprise CVN 65-Big E Strike Group will join the USS Stennis and the USS Nimitz carriers, building up the largest sea, air, marine concentration the United States has ever deployed opposite Iran.

JP: Report: IAF preparing for Iran strike