This article details the operational capabilities of Iran's naval forces, with a particular focus on its Ghadir-class midget submarines. These submarines, measuring approximately 29 meters in length and weighing around 120 tons, are designed for deployment in shallow waters, making them suitable for the average depth of key shipping channels within the Strait of Hormuz. Iran reportedly operates up to 10 such vessels. The nation has also invested decades in studying the Gulf's geography and training its personnel to enhance operational effectiveness in these waters. Beyond the Ghadir-class, Iran's naval assets include other submarine types and various missile systems, designed for both short-range engagements and longer-distance strikes across the Strait of Hormuz and into the Gulf of Oman.

Source: https://timesofindia.indiatimes.com/defence/international/under-the-sea-how-irans-invisible-fleet-of-midget-submarines-is-turning-strait-of-hormuz-into-danger-zone/articleshow/129728310.cms