The GEMSS mine system (Ground Emplaced Mine Scattering System) was a United States mine-laying system, part of the Family of Scatterable Mines used to rapidly emplace large tactical minefields in friendly territory. [1] [2] It consisted of two different types of dispensers, the towed M128 "Frisbee Flinger" and the auxiliary M138 "Flipper" portable mine layer, and deployed mines similar to those used in the GATOR mine system minus the aeroballistic casing. GEMSS was eventually replaced in US service by the Volcano mine system. [3]
The M128, fitted on a modified M794 trailer, first entered service in 1986. With an empty weight of 4,733kg, when fully loaded with 800 mines (a process which could take up to 20 minutes) the system weighed 6,364kg. [3] Typical loadout consisted of 666 anti-tank (AT) mines and 124 anti-personnel (AP) mines. The M128 could be towed by a variety of wheeled or tracked prime movers. [2] One M128 was issued to each combat engineer company operating with heavy forces. [4] Over the course of 25 minutes, an M128 could lay three rows of mines, each 888 meters long and 60 meters wide, separated by two lanes each 50–100 meters in width. The area density was .005 mines per square meter, with a linear density of .75 AT land mines per meter of front. [2]
The M138 "Flipper" was introduced in 1991 as a supplemental system to the M128. Weighing 55kg, the unit could be mounted to any vehicle in about ten minutes. [3] Four Flippers were assigned to each unit with an M128, or to platoons operating as part of light forces. [4] Three Flippers operating together could lay a minefield of the same size and density as one laid by an M128 in the same amount of time. [2]
GEMSS deployed two types mines, the M74 anti-personnel (AP) mine and the M75 anti-tank (AT) mine, along with an inert M79 practice mine. All three were the same size with a diameter of 199mm and height of 66mm. [3]
The M74 mine weighed 3.1 lb (1.4 kg) in total with an explosive weight of .92 lb (0.42 kg). Arming as it travels through the air, the mine would deploy four tripwires when it came to a rest on the ground. The movement of a tripwire or physical disturbance of the mine itself would cause it to explode. Expiration of the self-destruct timer or running out of power would also cause it to explode. For storage and transportation, a sealed container could hold forty mines, divided between eight sleeves, while six containers could fit on a pallet. [5]
The M75 mine was slightly heavier at 4 lb (1.8 kg) total and an explosive weight of 1.29 lb (0.59 kg). In terms of arming, functioning and storage it was the same as the M74, however instead of deploying tripwires it would explode if a vehicle passed over it. Additionally, one in every five M75 was fitted with an antidisturbance switch. [6]
A land mine, or landmine, is an explosive weapon concealed under or camouflaged on the ground, and designed to destroy or disable enemy targets, ranging from combatants to vehicles and tanks, as they pass over or near it.
A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel or a particular vessel type, akin to anti-infantry or anti-vehicle mines. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect friendly vessels and create "safe" zones. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake an expensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where the greatest concentration of enemy firepower will be encountered.
The Claymore mine is a directional anti-personnel mine developed for the United States Armed Forces. Its inventor, Norman MacLeod, named the mine after a large medieval Scottish sword. Unlike a conventional land mine, the Claymore is command-detonated and directional, meaning it is fired by remote-control and shoots a wide pattern of metal balls into the kill zone. The Claymore can also be victim-activated by booby-trapping it with a tripwire firing system for use in area denial operations.
The M198 is a medium-sized, towed 155 mm artillery piece, developed for service with the United States Army and Marine Corps. It was commissioned to be a replacement for the World War II-era M114 155 mm howitzer. It was designed and prototyped at the Rock Island Arsenal in 1969 with firing tests beginning in 1970 and went into full production there in 1978. It entered service in 1979 and since then 1,600 units have been produced.
A depth charge is an anti-submarine warfare (ASW) weapon. It is intended to destroy a submarine by being dropped into the water nearby and detonating, subjecting the target to a powerful and destructive hydraulic shock. Most depth charges use high explosive charges and a fuze set to detonate the charge, typically at a specific depth. Depth charges can be dropped by ships, patrol aircraft, and helicopters.
A mine roller or mine trawl is a demining device mounted on a tank or armoured personnel carrier, designed to detonate anti-tank mines. It allows engineers to clear a lane through a minefield which is protected by enemy fire.
The GATOR mine system is a United States military system of air-dropped anti-tank and anti-personnel mines developed in the 1980s to be compatible with existing cluster dispensers. It is used with two dispenser systems—the Navy 230 kg (500 lb) CBU-78/B and the Air Force 450 kg (1,000 lb) CBU-89/B. Additionally the mines are used with the land- and helicopter-based Volcano mine system.
A Bangalore torpedo is an explosive charge placed within one or several connected tubes. It is used by combat engineers to clear obstacles that would otherwise require them to approach directly, possibly under fire. It is sometimes colloquially referred to as a "Bangalore mine", "banger" or simply "Bangalore" as well as a pole charge.
In the military science of fortification, wire obstacles are defensive obstacles made from barbed wire, barbed tape or concertina wire. They are designed to disrupt, delay and generally slow down an attacking enemy. During the time that the attackers are slowed by the wire obstacle they are easy to target with machine gun and artillery fire. Depending on the requirements and available resources, wire obstacles may range from a simple barbed wire fence in front of a defensive position, to elaborate patterns of fences, concertinas, "dragon's teeth" and minefields hundreds of metres thick.
The M728 Combat Engineer Vehicle (CEV) is a full-tracked vehicle used for breaching, obstacle removal, and pioneering operations. Production commenced in 1965 and ceased in 1987. A total of 312 of all variants of these armored engineer vehicles were produced.
In anti-tank warfare, an anti-tank mine is a type of land mine designed to damage or destroy vehicles including tanks and armored fighting vehicles.
The German S-mine, also known as the "Bouncing Betty" on the Western Front and "frog-mine" on the Eastern Front, is the best-known version of a class of mines known as bounding mines. When triggered, these mines are launched into the air and then detonated at about one metre (3 ft) from the ground. The explosion projects a lethal spray of shrapnel in all directions. The S-mine was an anti-personnel mine developed by Germany in the 1930s and used extensively by German forces during World War II. It was designed to be used in open areas against unshielded infantry. Two versions were produced, designated by the year of their first production: the SMi-35 and SMi-44. There are only minor differences between the two models.
The anti-personnel obstacle breaching system (APOBS) is an explosive line charge system that allows safe breaching through complex antipersonnel obstacles, particularly fields of land mines. The APOBS is a joint DOD program for the U.S. Army and the United States Marine Corps.
The M58 Mine Clearing Line Charge (MICLIC) is a rocket-projected mine-clearing line charge used to provide a "close-in" demining capability for maneuver forces of the United States Army and Marine Corps. First entering service with United States Army Europe and Africa in 1988, it is effective against conventionally fuzed land mines and, when detonated, it provides a lane 8 meters by 100 meters (8.75 yards by 109 yards).
The M136 Volcano Vehicle-Launched Scatterable Mine System is an automated mine delivery system developed by the United States Army in the 1980s. The system uses prepackaged mine canisters which contain multiple anti-personnel (AP) and/or anti-tank (AT) mines which are dispersed over a wide area when ejected from the canister. The system, commonly referred to as Volcano, is also used by other armies around the world.
The M16 mine is a United States-made bounding anti-personnel mine. It was based on captured plans of the World War II era German S-mine and has similar performance. The mine consists of a cast iron body in a thin steel sleeve. A central fuze well on the top of the mine is normally fitted with a pronged M605 pressure/tension (tripwire) fuze. Sufficient pressure on the prongs or tension on an attached tripwire causes the release of a striker. The freed striker is forced into a percussion cap which ignites a short pyrotechnic delay. The purpose of this delay is to allow the victim to move off the top of the mine, to prevent its upward movement from being blocked. Once the delay has burned through, a 4.5-gram black powder charge is ignited, which launches the inner iron body of the mine up into the air. The charge also ignites a second pair of pyrotechnic delays.
The 2 inch medium trench mortar, also known as the 2-inch howitzer, and nicknamed the "toffee apple" or "plum pudding" mortar, was a British smooth bore muzzle loading (SBML) medium trench mortar in use in World War I from mid-1915 to mid-1917. The designation "2-inch" refers to the mortar barrel, into which only the 22-inch bomb shaft but not the bomb itself was inserted; the spherical bomb itself was actually 9 inches (230 mm) in diameter and weighed 42 lb (19 kg), hence this weapon is more comparable to a standard mortar of approximately 5-6 inch bore.
The modern era of defending American harbors with controlled mines or submarine mines began in the post-Civil War period, and was a major part of US harbor defenses from circa 1900 to 1947.
Family of Scatterable Mines (FASCAM) is an umbrella term for a range of systems of the armed forces of the United States, which allows a maneuver commander to rapidly place mines as a situational obstacle; as a reserve obstacle emplacement capability; and to directly attack enemy formations through disrupt, fix, turn, and block. Modern fusing, sensing, and anti-disturbance devices allow scatterable mines to defeat enemy attempts to reduce and/or clear the minefield. FASCAM mines are delivered through artillery, rocket launchers, indirect crew served weapons, special mine sowing vehicles, helicopters and aircraft. FASCAM mines utilize a random or pre-programmed self-destruct period, countermeasure hardening and anti-disturbance features. All FASCAM mines have an active life cycle and self-destruct (SD) time after their active life has expired. The duration of the active life varies from 4 hours to 15 days depending on the system.
VSM-1 is a Soviet helicopter-based remote mining system. It can be mounted on various variants of the Mil Mi-8 helicopter, particularly the Mi-8T and Mi-8MT. It is capable of deploying a range of high explosive and fragmentation mines.