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Before the onset of recent hostilities, Iran’s naval forces boasted a stockpile of approximately 5,000 sea mines. However, following targeted strikes by the United States and Israel over recent weeks, this arsenal has been significantly depleted, now standing at around 500 mines. Additionally, the Pentagon has confirmed the elimination of all Iranian mine-laying vessels.
Despite these setbacks, analysts caution that Iran retains the capability to retaliate in the strategically vital Strait of Hormuz. With the remaining sea mines, Iran poses a continued threat to military warships, oil tankers, and other maritime vessels traversing the area.
This warning is echoed by Andy Perry, a former mine warfare specialist with the Royal Australian Navy. Earlier this month, Perry highlighted the challenge posed by these relatively inexpensive yet potent weapons. He emphasized that sea mines are notoriously difficult to detect and equally perilous to neutralize.
Sea mines come in various configurations, each with its own mechanism of action. Some are spiked, reminiscent of those deployed during World War II. Others, known as influence mines, detonate in response to the static electricity of passing ships. There are also magnetic mines, which react to shifts in the water’s magnetic field, and acoustic mines, sensitive to the sounds made by vessels. Pressure mines, on the other hand, explode when there are changes in water pressure.
Perry pointed out the ease with which these mines can be used. “They require minimal training or specialized support,” he noted. “Their deployment is straightforward; they can be placed in the water using civilian boats, small crafts, or even submarines.”
“And unlike many other naval weapons, they can be laid without direct combat interaction with an adversary, remaining dormant until activated by a passing vessel.”
While the mine clearance abilities of the US Navy and other western navies have improved to advanced levels, it remains a tough and potentially deadly task.
The conventional tactic is for naval ships to sweep an are of the sea for mines.
Once detected, mines moored to the sea floor have their cables cut, then when they float to the surface, or when they’re destroyed.
Mines lurking at the bottom of the ocean can be detected by minesweeping ships using acoustic, electrical or magnetic signals before they’re eliminated by a controlled explosion.
They can also be detected by sonar on underwater drones or lasers mounted on the drones or even on helicopters and then destroyed safely.
But the ever-present danger makes any mine clearing mission a lengthy one when caution comes first.
The task could be even tougher with reports the Iranian navy doesn’t know the exact places around the Strait of Hormuz where it laid their mines.
It means the timeline to clear them can pull out from days to weeks to even months, a duration the global economy can ill afford.
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