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COUNTERSTROKE AT SOLTSY - Strategy & Tactics Press

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The method of mine countermeasures<br />

used in any one place is always<br />

determined by the type of mine<br />

encountered. Moored mines can be<br />

swept by gear towed behind minesweepers.<br />

Once such mines’ mooring<br />

cables are cut, they float to the<br />

surface where they can be destroyed<br />

by gunfire. Bottom influence mines,<br />

however, particularly those that try<br />

to defeat influence sweeping through<br />

the use of a counter-countermeasure,<br />

are more difficult to defeat. Influence<br />

sweeping requires the sweeper to tow<br />

a system behind it that simulates the<br />

various influences ships impart on<br />

their environment. The intent is to<br />

detonate the mines at a safe distance<br />

behind the sweeper.<br />

Without foreknowledge of the<br />

mines’ type (magnetic, magneticacoustic,<br />

pressure, etc), the commander<br />

must simulate all the influences<br />

the mines may be targeting. By the<br />

1970s, some mines could also be set<br />

for specific target types (for example,<br />

cruisers or aircraft carriers instead of<br />

destroyers), further complicating the<br />

mine countermeasure problem.<br />

Mines with counter-countermeasures<br />

allowed a pre-set number of<br />

targets to pass before detonating.<br />

Others had pre-set activation and deactivation<br />

dates, either to ensure safe<br />

passage during set periods, establish<br />

a “sanitation date,” or just to further<br />

complicate the mine countermeasures<br />

problem. Defeating those mines<br />

necessitated extensive sweeping for<br />

several weeks just to provide a probability,<br />

not certainty, of safe passage.<br />

Worse, since pressure mines relied on<br />

the level of pressure engendered by<br />

a ship’s passage through the water,<br />

phenomena that varied according to a<br />

ship’s size and speed, they could not<br />

be fooled by simulation devices. They<br />

could only be detonated through the<br />

use of a specially designed ship of the<br />

size and type that generated both the<br />

required “pressure wave” and had the<br />

reinforced hull and systems to survive<br />

the blast. Ultimately, the problems of<br />

defeating pressure mines led to the<br />

development of mine hunting.<br />

Mine hunting is even slower than<br />

minesweeping and was, in its early<br />

days, far more dangerous. Though sonar<br />

and other sensors can detect bottom<br />

mines, those systems also detect<br />

a large number of non-mine objects<br />

with similar shapes and dimensions.<br />

Further, tides, marine life and bottom<br />

materials tend to obscure mines over<br />

time. Hence every suspected mine has<br />

to be investigated individually. Some<br />

mines have anti-diver devices, either<br />

attached or placed nearby, which<br />

detonate when any small metallic<br />

object remains near it for a set time.<br />

All the dangers involved led<br />

Western nations to develop and rely<br />

increasingly on methods that didn’t<br />

require divers. The American use of<br />

dolphins in Vietnam and the Persian<br />

Gulf was a controversial solution.<br />

Most Western nations relied on<br />

remote underwater robotic systems as<br />

the Cold War drew to an end, as does<br />

the US today.<br />

Mine warfare figured prominently<br />

in four of the hot wars that occurred<br />

during the Cold War: Korea, Vietnam,<br />

the 1967 Arab-Israeli War, and the<br />

Iraq-Iran War. Ironically, World War<br />

I-era moored contact mines dominated<br />

the minefields of all but the second<br />

of those conflicts. The US Navy was<br />

also embarrassed by its lack of mine<br />

countermeasures forces in three of<br />

those wars, and only avoided such<br />

embarrassment again in Vietnam<br />

because the North Vietnamese didn’t<br />

employ mines to any significant<br />

degree.<br />

The US encountered few mines<br />

during the early naval operations of<br />

the Korean War. Expecting a short<br />

war and seeing little risk of US<br />

involvement, North Korea saw little<br />

need for protective minefields when<br />

its troops invaded South Korea in<br />

1950. Then Gen. MacArthur’s landing<br />

at Inchon changed Pyongyang’s<br />

strategic thinking. China’s leaders<br />

were also aware of the US Navy’s<br />

amphibious capabilities, and they<br />

therefore emphasized the use of<br />

mines in coastal defense operations.<br />

The two allies laid thousands of<br />

Soviet-supplied naval mines off North<br />

Korea’s coast in 1950-51, placing<br />

the largest concentrations around the<br />

country’s eastern ports. With almost<br />

all of America’s mine countermeasures<br />

units having been decommissioned<br />

after World War II, the USN<br />

had to reactivate Imperial Japanese<br />

Navy mine sweeping units, including<br />

their crews, to sweep the thousands of<br />

moored contact mines encountered off<br />

Wonsan and Hangnam harbors. That<br />

embarrassment rejuvenated America’s<br />

mine warfare consciousness and<br />

efforts in the 1950s, but those new<br />

forces were placed in reserve by the<br />

early 1960s.<br />

The 1967 Arab-Israeli War saw<br />

the next significant employment of<br />

naval mines when Egypt closed the<br />

Suez Canal and the Israeli port of<br />

Eilat by laying thousands of mines<br />

in and around their approaches. The<br />

Egyptians sprinkled bottom influence<br />

magnetic mines among the moored<br />

contact mines in their minefields.<br />

Though the minefields didn’t affect<br />

operations by the Israeli Navy’s<br />

smaller combatants, it prevented their<br />

destroyers and transports from using<br />

those waters. It also deterred merchant<br />

shipping from entering Eilat.<br />

Fortunately for Israel, the fields off<br />

Eilat contained a manageable number<br />

of mines. The moored contact mines<br />

were cleared in a few days, but it took<br />

several months of mine hunting by<br />

divers to clear away the bottom influence<br />

mines.<br />

It was the US that employed naval<br />

mines in the largest numbers and to<br />

the greatest effect during the Vietnam<br />

War. The Viet Cong occasionally used<br />

floating mines in South Vietnam’s<br />

rivers, and the North Vietnamese<br />

employed a few moored contract<br />

mines on an ad hoc basis. The US,<br />

however, used aircraft-dropped mines<br />

to close North Vietnam’s Haiphong<br />

Harbor and other ports to shipping.<br />

Equipped with a variety of sensor and<br />

counter systems, those mines proved<br />

far beyond North Vietnam’s ability to<br />

sweep, closing the ports completely<br />

to shipping. The impact of those<br />

closures contributed to bringing North<br />

Vietnam to the negotiating table,<br />

and the agreement that ended that<br />

war included a requirement for the<br />

US to clear the minefields, a process<br />

that took over two months. A few<br />

months later, those same USN mine<br />

countermeasures units joined with<br />

Egyptian forces to conduct the mine<br />

clearing effort that allowed the Suez<br />

Canal to be reopened after eight years<br />

of closure. As the 1980s approached,<br />

however, the US refocused its naval<br />

forces on open ocean operations and<br />

left mine countermeasures to its allies.<br />

Iran employed mines surreptitiously<br />

during its war with Iraq in the<br />

1980s. Since laying mines in international<br />

waters violated international<br />

law, Iran conducted its operations<br />

covertly, using nominally civilian surface<br />

craft to lay moored contact mines<br />

in the Persian Gulf’s shipping lanes.<br />

strategy & tactics 35

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