155 mm SpGH EVA

{{Short description|Slovak 155 mm self-propelled howitzer}} {{Infobox weapon | name = 155mm SpGH EVA | image = EVA Self-propelled Gun-Howitzer (2).JPG| | image_size = 300 | alt = | caption = EVA 155 mm 6×6 Self-propelled Gun Howitzer | type = Self-propelled gun | origin = {{SVK}} / {{CZE}} - (truck chassis) | is_artillery = yes | service = | used_by = | wars = | designer = | design_date = | manufacturer = | unit_cost = | production_date = | number = | variants =  | spec_label = | mass = 6×6: {{convert|20.2|t|ST|abbr=on}}. 8×8: 28 tonnes<ref>[https://kotadef.sk/wp-content/uploads/2019/03/EVA-8x8.pdf 155 mm 52 cal. TMG EVA 8×8]</ref> (30.9 short ton) combat weight. | length = {{convert|11.2|m|ftin|abbr=on}} | width = {{convert|2.55|m|ftin|abbr=on}} | height = {{convert|3.33|m|ftin|abbr=on}} | diameter = | crew = 3 | passengers =  | cartridge = | cartridge_weight = | caliber = 155 mm (6.1") | barrels = 52-caliber | action = | rate = 5 rounds in the first minute 13 rounds in 3 minutes <ref name="Nová slovenská húfnica EVA"|>{{cite web|title=Nová slovenská húfnica EVA |url=https://www.armadninoviny.cz/nova-slovenska-hufnica-eva.html |website=Armadninoviny.cz |access-date=January 23, 2023 |date=May 26, 2015 |language=cs}}</ref> | velocity = | range = | max_range = {{convert|41|km|mi|abbr=on}} with ERFB-BB | feed = | sights =  | breech = | recoil = | carriage = | elevation = | traverse =  | armour = | primary_armament = | secondary_armament = | engine = | engine_power = | pw_ratio = | payload_capacity = 24 rounds in automatic magazines ready to fire | drive = 6×6 or 8×8 | transmission = | suspension = | clearance = | fuel_capacity = | vehicle_range = {{convert|700|km|mi|abbr=on}} | speed = {{convert|90|km/h|mph|abbr=on}} | guidance = | steering =  | ref = }} {{Infobox weapon | name = 155mm SpGH EVA M2 | image = | image_size = | alt = | caption = EVA M2 155 mm Self-propelled Gun Howitzer | origin = Slovakia | is_artillery = yes | service = | used_by = | wars = | designer = | design_date = | manufacturer = | unit_cost = | production_date = | number = | variants =  | spec_label = | mass = {{convert|27|t|ST|abbr=on}} combat weight.<ref>{{cite web |title=EVA M2 Self-propelled autonomous artillery system |url=https://kotadef.sk/projekty/bia-eng/?lang=en |website=Konštrukta Defense |access-date=22 October 2024}}</ref> | length = {{convert|11.3|m|ftin|abbr=on}} | width = {{convert|2.55|m|ftin|abbr=on}} | height = {{convert|3.3|m|ftin|abbr=on}} | diameter = | crew = 3 to 5 | passengers =  | cartridge = | cartridge_weight = | caliber = 155 mm (6.1") | barrels = 52-caliber | action = | rate = 5 rounds in the first minute 13 rounds in 3 minutes | velocity = | range = | max_range = {{convert|41|km|mi|abbr=on}} with ERFB-BB over {{convert|50|km|mi|abbr=on}} with VLAP | feed = | sights =  | breech = | recoil = | carriage = | elevation = - 3.5°/+75° | traverse = ± 45° | armour = | primary_armament = | secondary_armament = | engine = TATRA T3C-928.90 | engine_power = {{convert|300|kW|hp|abbr=on}} | pw_ratio = 14.9 hp/t | payload_capacity = 20 rounds in automatic magazines ready to fire | drive = 6×6 | transmission = Allison 4500SP | suspension = | clearance = | fuel_capacity = | vehicle_range = | speed = {{convert|90|km/h|mph|abbr=on}} | guidance = | steering =  | ref = }}

'''EVA''' is a Slovak-made self-propelled howitzer, developed by Konstrukta Defence and publicly revealed in 2015. The EVA is based on a Tatra 815 6×6 truck, but the system can be also mounted on an 8×8 truck chassis. It is armed with a 155 mm / L52 howitzer and has a maximum firing range of {{convert|41|km|mi}} with ERFB-BB ammunition.<ref>{{Cite web |url=http://www.military-today.com/artillery/eva.htm |archive-url=https://web.archive.org/web/20160224205900if_/http://www.military-today.com/artillery/eva.htm |url-status=usurped |archive-date=February 24, 2016 |title=EVA - 155-mm truck-mounted howitzer |access-date=2022-08-20}}</ref><ref>{{cite web|url=https://www.armyrecognition.com/idet_2015_news_official_online_show_daily_coverage/konstrukta_defence_of_slovakia_unveils_its_eva_a_new_6x6_155_mm_self-propelled_howitzer_at_idet_1905155.html|title = Konstrukta Defence of Slovakia unveils its EVA a new 6×6 155 mm self-propelled howitzer at IDET 1905155 | IDET 2015 News Official Online Show Daily Coverage | Defence security military exhibition 2015}}</ref>

==Design== Created as a shared project between Konstrukta Defense and ZTS Special, using technology developed for SpGH Zuzana 2. It utilizes a 155mm gun, 52-caliber, achieving a range of up to {{convert|41|km|mi|abbr=on}} using specialized ERFB-BB munition. The firing rate is stated as up to 5 rounds in the first minute, up to 13 rounds in 3 minutes. The vehicle carries 24 rounds in automatic magazines ready to fire. The operation is fully automated and can be performed from the inside of the armored cabin. Multiple round simultaneous impact firing mode is supported and the howitzer can be connected to command and control system of a battalion battery.

High mobility is achieved by using Tatra 815 6×6 chassis, however the developer states that there is an option for 8×8. The model presented in 2015 offers range of up to {{convert|700|km|mi|abbr=on}} and speed of {{convert|80|km/h|mph|abbr=on}} using the 6×6 chassis. Dimensions and weight were kept under the limits of C-130, achieving high strategic mobility for the system.

Compared to competing designs of similar concept, EVA offers a compact design, low weight and high range, the ability to be transported using C-130 planes, as well as full automation of the firing with minimal crew needed.<ref name="Nová slovenská húfnica EVA" />

=== Variants ===

==== EVA M2 ==== {{Infobox weapon | name = 155mm SpGH EVA M3 | image = | image_size = | alt = | caption = EVA M3 155 mm Self-propelled Gun Howitzer | is_artillery = yes | service = | used_by = | wars = | designer = | design_date = | manufacturer = | unit_cost = | production_date = | number = | variants =  | spec_label = | mass = {{convert|28|t|ST|abbr=on}} combat weight.<ref>{{cite web |title=EVA M2 Self-propelled autonomous artillery system |url=https://kotadef.sk/projekty/bia-eng/?lang=en |website=Konštrukta Defense |access-date=22 October 2024}}</ref> | length = {{convert|11.56|m|ftin|abbr=on}} | width = {{convert|2.55|m|ftin|abbr=on}} | height = {{convert|3.3|m|ftin|abbr=on}} | diameter = | crew = 2 to 3 | passengers =  | cartridge = | cartridge_weight = | caliber = 155 mm (6.1") | barrels = 52-caliber | action = | rate = 5 rounds in the first minute 13 rounds in 3 minutes | velocity = | range = | max_range = - {{convert|40|km|mi|abbr=on}} with standard ammunition, - Over {{convert|50|km|mi|abbr=on}} with VLAP ammunition | feed = | sights =  | breech = | recoil = | carriage = | elevation = - 3.5°/+75° | traverse = ± 30° | armour = | primary_armament = | secondary_armament = | engine = TATRA T3C-928.90 | engine_power = {{convert|300|kW|hp|abbr=on}} | pw_ratio = 14.9 hp/t | payload_capacity = 20 rounds in automatic magazines ready to fire | drive = 6×6 | transmission = Allison 4500SP | suspension = | clearance = | fuel_capacity = | vehicle_range = | speed = {{convert|90|km/h|mph|abbr=on}} | guidance = | steering =  | ref = }}

In August 2024, Konstrukta Defence tested the '''EVA M2''' variant (initially revealed in September 2023 under the name '''BIA'''<ref>{{cite web |title=155mm SpGH BIA at world premiere in DSEI London |url=https://kotadef.sk/novinky/155mm-spgh-bia-at-world-premiere-in-dsei-london/?lang=en/ |website=KONŠTRUKTA-Defence |access-date=26 September 2024 |language=en-UK |date=12 September 2023}}</ref>). The shooting capabilities, structural integrity, and mobility were all evaluated. This variant is based on the Tatra 815 6×6 and is equipped with an armoured cabin.<ref name=":0">{{Cite web |date=2024-08-22 |title=KONŠTRUKTA-Defence: first live-firing test of EVA M2 self-propelled howitzer [VIDEO] |url=https://defence-industry.eu/konstrukta-defence-first-live-firing-test-of-eva-m2-self-propelled-howitzer-video/ |access-date=2024-08-23 |language=en}}</ref>

The fire control system is processing on its own the firing solutions for the system. It takes into account the weather information, the ballistic, the topography, and the targeting information. The barrel's position is automatically aiming at the target, and an auto-loader is loading the canon.<ref name=":0" />

==== EVA M3 ==== At IDEB 2026, Konštrukta – Defence, unveiled a brand new variant, the '''EVA M3'''. The new '''EVA M3''' utilizes a newer, Tatra Force 3 chassis and cabin, unlike the Tatra Force 2 which was used on the previous '''EVA M2'''. Visually, the cabins are significantly different between the two, while the '''EVA M2''' had a four-door cabin, the new '''EVA M3''' has a two-door cabin that can fit up to 3 crew.<ref name=":2">{{Cite web |last=Tomáš |first=Viktor |date=2026-05-13 |title=Čím sa húfnica Eva M3 líši od predchádzajúcej verzie Eva M2? |url=https://www.futurearmy.sk/2026/05/13/cim-sa-hufnica-eva-m3-lisi-od-predchadzajucej-verzie-eva-m2/ |access-date=2026-05-20 |website=Future Army |language=sk-SK}}</ref>

A large change occurred at the back of the vehicle, while the '''EVA M2''' had two large stabilizing legs, the new '''EVA M'''3 has them combined into one and it's smaller. Another difference in the new variant is the way the gun can turn. On the '''M2''', the gun would have to be rotated to its "transport position", and only then could the stabilizing legs be lifted. However, the '''M3''' is capable of turning the gun and lifting the stabilizing legs concurrently.<ref name=":2" />

==== Potential Developments ==== Reportedly the manufacturer, Konštrukta – Defence, has announced the development of a lighter variant that would be based on a 4×4 chassis at the recent Polish–Slovak Defence-Industrial Dialogue in Bratislava.<ref>{{cite magazine |author= |date=April 2026 |title=Obrana 4/2026 |url=https://www.mosr.sk/obrana-42026/ |access-date=May 30, 2026 |magazine=Obrana |publisher=Slovak Ministry of Defence |location=Slovakia |page=11 |volume=4}}</ref>

== Production == In March of 2026, the Slovak company Koval Systems has officially launched mass production of the self-propelled howitzers. <ref name=":1">{{Cite web |title=Slovakia Launches Production of Eva Self-Propelled Howitzers |url=https://militarnyi.com/en/news/slovakia-launches-production-of-eva-self-propelled-howitzers/ |access-date=2026-03-24 |website=Militarnyi |language=en-US}}</ref>

The company is currently manufacturing superstructure components for the first batch of 16 vehicles.<ref name=":1" />

== Operators ==

=== Future operators ===

;'''{{flag|Slovakia}}''' : The Slovak Ministry of Defence signed a framework agreement for the EVA M3 in December 2025.<ref>{{Cite web |last=Tomáš |first=Viktor |date=2025-12-29 |title=U Kaliňáka podpisovali pred Vianocami zmluvy narýchlo a s chybami |url=https://www.futurearmy.sk/2025/12/29/u-kalinaka-podpisovali-pred-vianocami-zmluvy-narychlo-a-s-chybami/ |access-date=2026-05-20 |website=Future Army |language=sk-SK}}</ref> Recently, it was discovered that the Slovak Armed Forces ordered 16 vehicles.<ref name=":2" />

=== Potential operators ===

; {{flag|Malaysia}} : The EVA M2 is among the systems considered by Malaysia to become the next self-propelled howitzers.<ref>{{Cite web |last=@DefSecAsia2020 |date=2024-10-15 |title=(VIDEO) KONŠTRUKTA-Defence Unveils Modernized "Eva M2" 155mm SPH System. Malaysia? |url=https://defencesecurityasia.com/en/konstrukta-defence-unveils-modernized-eva-m2-155mm-sph-system-malaysia/ |access-date=2024-10-16 |website=Defence Security Asia |language=en-GB}}</ref> The Malaysian Armed Forces have reportedly selected the EVA M2 in October 2024 as future self-propelled howitzer.<ref>{{cite web |last1=Malyasov |first1=Dylan |title=Malaysia reportedly selects EVA M2 howitzer |url=https://defence-blog.com/malaysia-reportedly-selects-eva-m2-howitzer/ |website=Defence Blog |access-date=16 October 2024 |language=en-US |date=16 October 2024}}</ref> thumb|EVA 155 mm on 8×8 truck chassis

== See also ==  *{{lwc|Archer Artillery System|Archer}} *{{lwc|Advanced Towed Artillery Gun System|DRDO ATAGS}} *{{lwc|ATMOS 2000}} *{{lwc|A-222 Bereg (artillery system)|A-222 Bereg}} *{{lwc|2S22 Bohdana}} *{{lwc|CAESAR self-propelled howitzer|CAESAR}} *{{lwc|152 mm SpGH DANA}} *{{lwc|G6 howitzer}} *{{lwc|AHS Kryl}} *{{lwc|Nora B-52}} *{{lwc|PCL-09}} *{{lwc|PCL-161}} *{{lwc|PCL-181}} *{{lwc|Type 08#Variants|PLL-09}} *{{lwc|Type 19 155 mm wheeled self-propelled howitzer}} *{{lwc|155 mm SpGH Zuzana}} *List of artillery

==References== {{reflist}}

Category:Self-propelled artillery of Slovakia Category:Science and technology in Slovakia Category:155 mm artillery Category:Wheeled self-propelled howitzers Category:Six-wheeled vehicles

155 mm SpGH EVA

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