Iran has deployed domestically produced light submarines, known as the 'Persian Gulf Dolphins', in the strategic Strait of Hormuz to counter potential enemy warships. The announcement was made on May 10, 2026, by Rear Admiral Shahram Irani, commander of the Iranian Navy. He stated that the submarines are designed to detect and destroy hostile vessels and can remain submerged for extended periods in the area’s strategic waters.

According to the naval commander, the number of these light submarines is being increased based on existing threats, operational needs, and capabilities. The deployment was carried out as part of a mission honoring the martyrs of the Dena destroyer, during which the submarines surfaced before returning to deeper waters to continue their assigned operations.

The move highlights Iran’s emphasis on strengthening its maritime defense capabilities using indigenous technology, particularly in one of the world’s most critical maritime chokepoints.