A self-propelled gun (SPG) is a gun, whether it be an
artillerypiece, anti-tank gun, or anti-aircraft gun, mounted on a motorized wheeled or tracked chassis. As such the gun can be maneuvered under its own power as opposed to a towed gun that relies upon a vehicle or other means to be moved on the battlefield. Self-propelled guns are combat support weapons; they are employed by combat support units fighting in support of, or attached to, the main combat units: infantryand armour.
It may be armoured, in which case it is considered an
armoured fighting vehicle(AFV). Although the two are superficially similar self-propelled guns should not be confused with tanks. As a rule self-propelled guns are more lightly armoured and often lack turrets. Tanks are armed with guns designed specifically to destroy other tanks while only some types of self-propelled guns are designed for anti-tank warfare.
Some self-propelled guns are used as artillery pieces in a similar manner to traditional towed howitzers and as such also fall under the umbrella description of
self-propelled artillery, but the two terms are not the same and the one is not a sub group or specialization of the other.
The greatest tactical advantage in the case of artillery guns is clearly the greater degree of mobility they have compared to towed artillery. Not only is it important in offering military forces greater flexibility, but it is critical in avoiding attack from the enemy (
counter-battery fire) by allowing the guns to change position immediately after firing one or more salvos and before their position can be located (" shoot-and-scoot" tactics). A secondary advantage in the case of armoured – even lightly – guns is the increased protection offered to the gun crews.
There are four broad types of self-propelled gun; some may be able to fulfill more than one role.
Self-propelled artilleryand howitzers are used in the same way as their towed variety, generally for long-range bombardment. Self-propelled artillery can however also include other types of weapons not considered a "self-propelled gun", one example of which would be rocket artillery.
Assault guns are large-caliber artillery pieces, meant to support
infantryby direct fire with high explosiveammunition.
Tank destroyers are self-propelled anti-tankguns with guns powerful enough to be effective against main battle tanks. They are often used in defence and withdrawal operations.
These guns are designed to defend against attack by enemy aircraft, but they can also be used for direct fire against targets on the ground in close support of infantry.
Gun Carrier Mark I, British WWI
Birch gun, British Inter-war experiment
M7 Priest, US, WWII
G6 Howitzer, modern South African 155 mm howitzer
M107 Self-Propelled Gun, US, modern
PzH 2000, modern German 155 mm howitzter
M109 howitzer, US modern
SSPH Primus, modern 155 mm howitzer developed for the Singapore Armed Forces
Sturmgeschütz III, German WWII
SU-122, Soviet WWII
ISU-152, Soviet WWII
Möbelwagen, German WWII
ZSU-23-4, modern Soviet four barreled (23 mm) gun
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self propelled gun — gun that is self powered, gun that has a vehicle as its base … English contemporary dictionary
M107 Self-Propelled Gun — The M107 175mm self propelled gun was part of a family of self propelled artillery that also included the M110. The M110E2 chassis had a Depot Level upgraded chassis and drive train due to the heavier “tube” (E2 barrel). The 175 mm gun was used… … Wikipedia
SU-100Y Self-Propelled Gun — Infobox Weapon is vehicle=yes name= SU 100Y Self Propelled Gun caption= origin=flagcountry|Soviet Union|1923 service= used by= flagcountry|Soviet Union|1923 wars= World War II designer= design date= manufacturer= unit cost= production date=… … Wikipedia
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anti-aircraft self-propelled gun — savaeigis zenitinis įrenginys statusas T sritis Gynyba apibrėžtis Zenitinės artilerijos kovos mašina, ginkluota viena arba keliomis automatinėmis patrankomis, turinčiomis bendrą taikymo mechanizmą ir ugnies valdymo prietaisus. Skirtas neaukštai… … Artilerijos terminų žodynas
anti-aircraft self-propelled gun and rocket system — savaeigis zenitinės artilerijos ir raketų kompleksas statusas T sritis Gynyba apibrėžtis Antžeminis zenitinės artilerijos ir raketų kompleksas, kurio ginklų sistemą sudaro bendrai valdomi artilerijos ir raketų ginklai. Savaeigis zenitinės… … Artilerijos terminų žodynas
Self-propelled artillery — British AS 90s firing in Basra, Iraq, 2006 … Wikipedia
self-propelled — adjective Date: 1869 1. containing within itself the means for its own propulsion < a self propelled vehicle > 2. mounted on or fired from a moving vehicle < a self propelled gun > … New Collegiate Dictionary
self-propelled — self′ propelled′ or self′ propel′ling adj. 1) propelled by itself 2) (of a vehicle) propelled by its own engine, motor, or the like 3) mil (of a gun or rocket launcher) having a vehicle as a base • Etymology: 1895–1900 … From formal English to slang