The first part of this two-part series on the Strait of Hormuz analyzed the strategic importance of the Strait for global energy shipping and political stability in the Arabian Gulf, and provided an overview of Iran’s overall strategy of using its asymmetric doctrine to disrupt commercial shipping within the vital waterways to both deter enemies and fight a protracted war if necessary. This second part will focus on Iran’s actual maritime capabilities and discusses whether their threats to close down oil shipment in the Strait of Hormuz are credible or not.
Although Tehran has frequently made clear their intentions to close the Strait of Hormuz in times of war or heightened tensions, do they actually have the military capability to do so? Both the Islamic Republic of Iran Navy (IRIN) and the Revolutionary Guards’ Navy (IRGCN) have invested in a multitude of asymmetrical weaponry which would be used to harass and disrupt shipping coming through the Strait.
One potent tool in the Iranian naval inventory is its extensive range of ASCMs, a capability the Iranians have sought to invest in since the Iran-Iraq War, either through direct purchase or by depending heavily on Chinese designs for indigenous production.
During the Tanker War, the Iranians would employ coastal-defense variants of the Chinese HY-1 and HY-2 ASCMs (also known as the CSSC-2 Silkworm and CSSC-3 Seersuckers) in a series of missile sites ringing the Strait of Hormuz, Qeshm Island, and nearby Kishk, thereby forcing any ship entering the Strait to sail through their missile envelope (it is believed Iran’s coastal missile defenses are still arranged in this manner).
Fears of escalation meant the missiles were never used within the Strait of Hormuz (although two missiles were fired at Kuwait on October 15 and 16, 1987, each hitting a tanker). Iran’s inventory of shore-based missiles are maintained by both navies.1,2, 25 Starting in the 1990s, the Iranians imported the C-801 and C802 missiles. The land-based variants had an advantage over the HY-1/HY-2s insofar that they could be mounted on vehicles and guided by mobile radar stations, instead of being pegged to fixed launch sites.
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