USA sailors also seized three surface-to-air missiles, thermal imaging scopes, components for air- and land-based drones, as well as munitions and weapon parts.
Other weapons allegedly included Iranian-made surface-to-air missiles, thermal imaging scopes, ammunition as well as "Iranian components for unmanned aerial and surface vessels".
The Pentagon said the weapons were "identical" to cargo seized by the United States last November, which had been bound for Yemen's Houthi rebels in violation of a UN Security Council Resolution.More news: New Zealand teams find British hiker's body in national park
"While conducting maritime security operations in the US Central Command area of operations, [the USS Normandy] boarded a dhow (a traditional sailing vessel) in accordance with global law and discovered a large cache of weapons", said the US Central Command (CENTCOM) in a statement released on Thursday.
According to a CENTCOM statement, the dhow was carrying 150 Dehlavieh anti-tank guided missiles, described by US officials as the Iranian versions of Russia's Kornet anti-tank missiles.
Iranian weapons smuggling into Yemen violates two UN Security Council resolutions, one that prohibits Iran from shipping weapons outside its border, and another that prohibits supplying weapons to the Houthis amid Yemen's prolonged and bloody civil war. Crew members from the USS Normandy seized the weapons after swooping on a small dhow while carrying out maritime security operations. "They're all very consistent with what we know about weapons that have been made in Iran".More news: ACCC Responds To TPG-Vodafone Merger After Court Ruling
Arrangements were being made for US experts and experts from allied nations and worldwide organizations to inspect the seized weapons.
Iran has denied providing weapons to the Houthi rebels, who have taken credit for staging attacks on neighbouring Saudi Arabia, since the conflict in Yemen broke out nearly five years ago. They were released by the USS Normandy after the illicit weapons were secured.More news: Washington Redskins to cut cornerback Josh Norman