The Iranian Navy has deployed Ghadir-class diesel-electric mini-submarines in the Strait of Hormuz [1, 2].
This deployment increases the risk to international shipping and naval assets in one of the world's most critical maritime chokepoints. The stealth capabilities of these vessels in shallow water challenge the traditional dominance of larger naval fleets.
These mini-submarines are described as "invisible guardians" [1, 2]. They are designed to operate quietly within the acoustically complex and shallow environments of the Strait of Hormuz, which sits between Iran and the Arabian Peninsula [1, 2].
By utilizing these smaller vessels, Iran aims to exploit the littoral zone to impose disproportionate costs on larger navies [1, 2]. The U.S. Navy said it is concerned regarding the difficulty of detecting these submarines in confined waters [1, 2].
Reports indicate this strategy was emphasized during 2024 news coverage of the region [2]. The Ghadir-class vessels allow Iran to maintain a persistent, hidden presence in the waterway, a tactic intended to deter foreign naval intervention.
Because the Strait is narrow, the ability of a small submarine to remain undetected while monitoring or targeting larger ships creates a significant tactical advantage for the Iranian military [1, 2].
“Iran is fielding Ghadir-class mini-submarines in the Strait of Hormuz.”
The use of Ghadir-class submarines represents a shift toward asymmetric warfare in the Strait of Hormuz. By prioritizing stealth and maneuverability over size and power, Iran can challenge the U.S. Navy's maritime superiority in shallow coastal waters, potentially complicating the security of global oil shipments.
