New Swiss Battle Tank: NKPz – Technological Breakthrough of 1979

1. Tarasenko https://btvt.info/

In 1978, the Armament Group (GRD) commissioned Contraves AG to develop the (Neuer Kampfpanzer) to create a modern tank by the early 1990s. The project was part of the Swiss Army’s modernization program aimed at enhancing counteroffensive capabilities. According to the Federal Council’s resolution of July 5, 1978, the objectives included:

• Development of the NKPz in Switzerland, tailored to national needs.
• Simultaneous evaluation of foreign tanks, primarily the Leopard 2.
• Preparation for the procurement of the first NKPz series by 1985–1986 to replace 300 Centurion tanks by 1995 and 150 Pz 61 tanks later. The development was supported by 30 million francs for the interim phase of 1978–1979, with total project costs, including procurement, estimated at 2 billion francs. However, the “tank scandal” of 1979, linked to defects in the Pz 68 (e.g., spontaneous turret rotation or gun firing), undermined confidence in national developments, complicating the NKPz’s realization. In April 1979, Swiss industry presented the concept of the new battle tank NKPz, a significant step in strengthening the country’s defense capabilities. The tank was designed with strict tactical requirements to achieve superiority in firepower, mobility, protection, and controllability. The NKPz was created as a versatile tool for counteroffensive operations, capable of competing with the world’s best tanks and remaining relevant in the future. The concept reflected Switzerland’s pursuit of technological independence and adaptation to the country’s unique geographical conditions, including complex mountainous terrain and military service specifics.

Full-scale tank mockup. Front view.

Full-scale tank mockup. Right side view.

Tactical Requirements and Concept

• The NKPz was envisioned as the backbone of the Swiss Army’s combat power, capable of addressing tasks in defensive and offensive operations. The tank had to meet the following requirements:
• Firepower: rapid target response (4–6 seconds from detection to firing), high first-shot hit probability in motion and static conditions, powerful armament with modernization potential, and night combat capability using passive thermal imaging systems.
• Mobility: exceptional cross-country performance, high road speed, and suitability for rail transport for rapid deployment.
• Protection: resistance to modern ammunition, including armor-piercing rounds, with adaptability to new threats, and high crew survivability through thoughtful layout.
• Controllability: ease of operation, ergonomic design, reliable communication systems, and suitability for military service, critical for the Swiss Army’s militia structure.

The NKPz concept embodied these requirements in the following solutions:

• A tank with a turret and a three-person crew (commander, gunner, driver) for optimized control.
• 120 mm smoothbore gun with an autoloader for rapid ammunition selection.
• Digital fire control system with a thermal imager and laser rangefinder.
• 1000 kW (1360 hp) diesel engine with automatic transmission.
• Hydropneumatic suspension with adjustable ground clearance and front-wheel drive.
• Modular armor and compartmentalization for enhanced survivability.

The NKPz featured a classic design with three main compartments: front (engine-transmission), middle (combat, including turret), and rear (ammunition and auxiliary). However, its unique feature was the front-mounted engine, distinguishing it from most 1970s tanks like the Leopard 2, M1 Abrams, and T-72, and aligning it with the Israeli Merkava. Notably, this layout followed the study of approximately 40 different configuration options, several of which merit separate consideration due to their uniqueness.

General views of the NKPz.

General layout of the NKPz.

The NKPz was designed as a balanced system, with each component meticulously developed. The tank weighs 50 tons, ensuring an optimal balance of protection and mobility. Its dimensions (length with gun – 8508 mm, width – 3630 mm, height – 2570 mm) enable effective operation in Switzerland’s landscape, including challenging mountain passes where the tank needed to be as short as possible. The 1000 kW (1360 hp) engine provides a specific power of 20 kW/t (27.2 hp/t), with a road range of 300 km. The armament includes a 120 mm gun, two machine guns, and smoke grenade launchers, making the tank versatile.

Crew Placement in the NKPz

Driver’s Station: Located in the front of the hull, to the left of the engine compartment, in an isolated armored compartment. Design: The driver was positioned in a semi-reclined posture to reduce hull height and armored volume. The station featured an adjustable, cushioned seat for comfort in mountainous terrain. Controls included a steering wheel, pedals, and an instrument panel displaying engine, suspension, and hydraulic status. Visibility: Three periscopic observation devices (Sichtverhältnisse) provided good forward and partial side visibility. The central periscope could be replaced with a night vision device for driving in darkness.

Driver’s station in the NKPz.

Documentation highlights “satisfactory visibility conditions” (zufriedenstellende Sichtverhältnisse) despite the front engine placement, achieved through thoughtful periscope placement. Access: The driver entered via an individual hatch in the upper hull, located in front of the turret, ensuring quick entry and exit. Protection: The driver’s station was isolated from the engine and ammunition, with the front engine serving as an additional protective barrier, reducing the risk of injury from frontal hits.

Commander’s Station

Location: In the turret, to the right of the gun, at the rear, ensuring optimal visibility and access to control systems. Design: The commander sat in an adjustable, cushioned seat to reduce strain in mountainous terrain. The station included a commander’s sight linked to the digital fire control system and a panel for coordinating crew actions. The commander had access to a radio, intercom, and navigation instruments integrated into the turret. Visibility: A commander’s cupola (Kuppel) with periscope devices provided 360° visibility. The main sight could be used for gun aiming if the gunner was incapacitated. A night sight with a thermal imager (for backup control) and binocular optics enabled observation in all conditions.

Access: The commander entered via a hatch in the turret roof above the station, ensuring quick entry and emergency exit. Protection: The commander’s station was protected by the turret’s modular armor and isolated from ammunition (6 rounds in the turret were stored in armored containers), reducing the risk of injury.

Commander’s station in the NKPz. Visible is a monitor displaying the gunner’s thermal sight feed, with the panoramic PERI sight with integrated laser rangefinder on the right.

Gunner’s Station:

Location: In the turret, to the left of the gun, in front of the commander, providing direct access to aiming systems and the autoloader. Design: The gunner sat in an adjustable seat synchronized with turret movement for comfort during aiming. The station included the main sight linked to the digital fire control system (with laser rangefinder and thermal imager) and weapon controls. An autoloader control panel allowed selection of ammunition types and monitoring of the loading process. Visibility: The main sight provided a wide field of view and high aiming accuracy. An additional periscope enabled observation in the forward turret sector. A night sight with a thermal imager supported combat in low-visibility conditions.

Access: The gunner entered via the same hatch as the commander or a secondary hatch in the turret roof, ensuring flexibility during evacuation. Protection: Like the commander, the gunner was protected by the turret’s armor and isolated from ammunition, minimizing risks during hits.

Gunner’s station in the NKPz.

Ergonomics: The workstations were designed for prolonged operation, with cushioned seats, intuitive interfaces, and good visibility. Documentation emphasizes the crew’s “psychological comfort” due to the thoughtful layout.

Firepower Firepower is a key advantage of the NKPz. The main armament – a 120 mm Rheinmetall smoothbore gun – can engage armored and unarmored targets. The autoloader ensures rapid delivery of up to 44 rounds and flexibility in ammunition selection. The digital fire control system with a laser rangefinder and thermal imager guarantees high accuracy, even at night or in poor visibility. Weapon stabilization and a low center of gravity enable firing on the move. Two machine guns and smoke grenade launchers enhance protection against infantry and provide concealment. The autoloader achieved a firing rate of 10–12 rounds per minute, surpassing tanks with manual loading, such as the Leopard 2.

Fire Control System (FCS)

The NKPz’s FCS was fully digital (Digitale Feuerleitanlage), automating detection, aiming, and firing processes, minimizing crew workload. The tank’s information and control system (Zentrallogik) coordinated all FCS components, including the autoloader, and integrated with sights. Environmental sensors accounted for temperature, pressure, wind, and tank tilt. However, key components – the commander’s panoramic sight and gunner’s sight – were planned for procurement abroad, primarily from the USA and West Germany. West Germany offered the proven PERI sight in various configurations. For the gunner’s sight, the USA was prioritized due to its lead in thermal imaging technology.

Autoloader: Design and Features

The NKPz’s autoloader was one of its most innovative yet controversial features. Its adoption reduced the crew to three by eliminating the loader, enhancing compactness and reducing weight. Key characteristics: Design: The autoloader was located in the rear hull, storing ammunition in two independent belt magazines with 22 rounds each, totaling 44 rounds in the main stowage (plus 6 additional rounds in armored turret containers, bringing the total to 50). These rounds could be used after depleting the automated stowage or if it was damaged. The system included a rotating mechanism synchronized with the turret and two Ladebaum (lifting arms) delivering rounds through the turret floor to the gun. An intermediate rotating magazine ensured independence from turret position, allowing rounds to be loaded from the main magazine at any time.

Unique ammunition automation (88% automated rounds): Feature: The NKPz’s ammunition consisted of 50 rounds for the 120 mm Rheinmetall smoothbore gun, with 44 (88%) stored in the rear hull’s two belt magazines. The loading cycle took 4–6 seconds, supporting a firing rate of 10–12 rounds per minute. For comparison, the Leopard 2’s ready ammunition is 15 rounds out of a total of 42.

These hull rounds are not compartmentalized, risking fire or detonation if hit. Additionally, only the 15 ready rounds are accessible in combat – afterward, the tank must withdraw, and the loader must transfer rounds to the turret. Thus, the Swiss tank could use all 50 rounds in combat, while the Leopard 2 was limited to 15. The French Leclerc (developed later in the 1980s) had an autoloader with 22 automated rounds out of 40 (55%), trailing the NKPz in automation.

• The autoloader comprised two belt magazines in the rear hull (22 rounds each, totaling 44), an intermediate rotating magazine (Drehteller), and two lifting arms (Schwinge/Ladebaum) transporting rounds through the turret floor to the gun.
• The system was electro-hydraulic, synchronized with the digital FCS, enabling selection of ammunition types (armor-piercing, multipurpose, training) and completing a loading cycle in 4–6 seconds.
• Six additional rounds were stored in the turret for manual loading in case of failure.

Autoloader diagram. Located under the turret basket. The diagram shows the intermediate rotating magazine (Drehteller), an armored shutter between the autoloader compartment (Magazin) and the fighting compartment (Schlause). The Schwinge in the NKPz’s autoloader was a pivoting arm, lifting and transferring 120 mm rounds from the intermediate rotating magazine (Drehteller) to the gun in 2–3 seconds, supporting a firing rate of 10–12 rounds per minute. Two independent Schwinge ensured reliability and flexibility in round delivery.

Autoloader Operation The autoloader provided fully automatic ammunition delivery, including selection of round type (armor-piercing, multipurpose, or training) and transport to the gun. The loading cycle took approximately 4–6 seconds, enabling a high firing rate. The system supported rapid ammunition type switching, enhancing combat flexibility. Manual loading of 6 turret rounds was available in case of failure, though this reduced efficiency. The likelihood of both autoloader subsystems failing simultaneously was considered very low. The round delivery process included:

• Ammunition selection:
• The gunner selected the round type via the FCS control panel, sending a command to the autoloader. The system identified which belt magazine (left or right, 22 rounds each) to draw from.
• Extraction from the main magazine:
• In the rear compartment, the belt magazine moved the selected round to the transfer point. A hydraulic or electromechanical mechanism extracted the round and transferred it to the intermediate rotating magazine (Drehteller).
• Preparation in the intermediate magazine:
• The Drehteller, synchronized with the turret’s position, rotated to align the round with the delivery path. This ensured loading independence from turret rotation, allowing the gun to be loaded in any position.
• Schwinge operation:
• One of the two Schwinge (corresponding to the active magazine) activated. The arm lowered to the Drehteller, grasped the round, and lifted it through the turret floor to the gun’s breech.
• The Schwinge moved along a pre-calculated arc to minimize time and avoid collisions with other turret components.
• The round was aligned vertically for loading into the barrel.
• Loading and return:
• The Schwinge transferred the round to the breech, where a hydraulic or electromechanical rammer pushed it into the barrel, and the breech closed. After delivery, the Schwinge returned to its initial position, ready for the next cycle, while the Drehteller accepted a new round from the main magazine.

However, this layout has a drawback – the illustration shows the relatively high seating of the turret crew and the space between the hull floor and crew stations.

The Leopard 2’s height to the turret roof is 2454 mm, while the NKPz’s is 2570 mm, 116 mm taller.

System Integration: The autoloader was linked to the digital FCS, ensuring synchronization of loading with aiming and firing. An electro-hydraulic system in the turret powered the autoloader, with a manual backup for emergencies. Ammunition was stored in an isolated compartment, minimizing detonation risks during hits. Advantages:

• Reduced crew: Eliminating the loader reduced turret volume, weight, and increased compactness.
• High firing rate: Automation ensured consistent firing rates, unaffected by crew fatigue.
• Flexibility: Rapid ammunition switching enhanced tactical versatility.
• Ergonomics: The commander and gunner could focus on control and targeting without loading duties.
• Safety: Isolated ammunition in the rear reduced crew injury risks.

Top view of the autoloader compartment in the rear hull with one magazine.

Functional autoloader test stand. View of the magazines.

Main magazines: Two belt magazines in the rear hull held 22 rounds each (44 total). They were isolated from the crew with blowout panels for safety.

Functional autoloader test stand.

Intermediate rotating magazine (Drehteller): Located in the rear hull, synchronized with turret position, ensuring round delivery independence from turret rotation.

Functional autoloader test stand.

View of the Ladebaum (lifting arm) device. Lifting arms – two mechanisms (one per magazine) – lifted rounds from the intermediate magazine through the turret floor to the gun’s breech.

Disadvantages and Risks:

• Technical complexity: The autoloader was new to Swiss industry, and its reliability was questioned, especially after Pz 68 issues.
• Repairability: The complex design could hinder field maintenance.
• Electronics dependency: Hydraulic or power failures could disable the autoloader, reducing combat capability. A manual loading mode was included, though less effective.
• The complex design increased costs and risked development delays. The American-German MBT/KPz 70 tank’s simpler autoloader had reliability issues, and Switzerland’s lack of autoloader experience heightened technical risks, though the design was technically feasible. The NKPz’s autoloader was achievable with Swiss industry’s early 1980s expertise in hydraulics, mechanics, and electronics through Contraves. The design with belt magazines, Drehteller, and two Schwinge was ambitious but feasible with thorough testing. However, lack of autoloader experience, high costs, tight timelines, and technical risks (noted in documentation) made the project vulnerable.

Mobility

The NKPz’s mobility was tailored to Switzerland’s challenging terrain, including mountains and forests. The hydropneumatic suspension with adjustable ground clearance (150–550 mm) and large wheel travel ensured stability on uneven ground. The 1000 kW (1360 hp) diesel engine and automatic transmission provided high speed and maneuverability. The front-mounted engine and transmission improved cross-country performance and crew protection. The tank could ford water obstacles up to 1.4 m without preparation and 2.5 m with preparation, handling lateral slopes up to 30° and longitudinal slopes up to 35°. Fuel tanks along the sides and rear hull contributed to even weight distribution (50 tons), compensating for the heavy front engine compartment. This enhanced stability on slopes. Isolation of fuel tanks from the crew and ammunition, reinforced by armored partitions and fire suppression, reduced fire or explosion risks during hits.

Engine, transmission, cooling system, and pipelines in the left track shelf of the NKPz.

The NKPz’s cooling system was designed to efficiently dissipate heat from the 12-cylinder, 4-stroke, 1360 hp turbocharged diesel engine with intercooled air, as well as the auxiliary engine and transmission. Its primary task was preventing overheating during intensive operations in mountainous terrain, where high temperatures and limited airflow could create thermal stress. The system included two block radiators (Blockkühler) in the rear hull, ensuring optimal weight distribution and protection from frontal hits. The system maintained stable cooling at ambient temperatures from -25°C to +40°C, suitable for Swiss conditions. Hydrostatic fan drives allowed precise speed regulation, minimizing energy consumption and noise. Heat from the retarder (hydrodynamic braking system) was dissipated through the transmission’s oil circuit, integrated with the rear radiators, enhancing system efficiency. The compact rear radiator and pipeline layout protected components from damage and simplified maintenance access.

View of the EV1TL engine and transmission.

Rear hull radiator placement.

Auxiliary Power Unit (APU). The NKPz’s APU consisted of an auxiliary engine (Hilfsmotor) with a generator, providing power to tank systems without running the main engine. This saved fuel, reduced noise, and lowered the thermal signature in standby mode.

View of the engine and auxiliary power unit (Hilfsmotor).

The APU was integrated into the front engine compartment, ensuring compactness and protection. It provided approximately 40 kW to power onboard systems when the main engine was off – supporting two electric motors for the hull’s hydraulic systems (suspension, steering) and turret (autoloader, aiming drives).

• The APU enabled standby mode (Lauerbetrieb) with minimal noise, critical for stealth and fuel efficiency during long halts.
• It powered electronics, including the thermal imager, laser rangefinder, and digital FCS, without starting the main engine.
• Rear-mounted batteries, charged by the APU, provided backup power if the generator failed.
• The APU supported main engine startup in cold conditions by preheating coolant.

Pipelines in the left track shelf connected the rear radiators (two block radiators with hydrostatically controlled fans) to the front engine compartment, housing the engine and transmission. Coolant circulated through these pipelines, dissipating heat from the engine and transmission, while hydraulic fluid supported the hydropneumatic suspension, autoloader, and other systems. Additional armor plates or modular armor could be installed in this area to protect pipelines from shrapnel or side hits.

Running Gear The NKPz’s running gear, suspension, and adjustable ground clearance were key to ensuring high cross-country performance, stability, and maneuverability for a 50-ton tank (potentially up to 55 tons). These components were tailored for compactness, reliability, and rail transport compatibility. The adjustable ground clearance (150–550 mm) allowed raising or lowering the tank to overcome obstacles, improve slope stability, or reduce its silhouette in cover.

• Large suspension travel (400 mm) provided excellent shock absorption, critical for rocky and hilly terrain.
• Hydraulic shock absorbers, separate from springs, effectively damped vibrations, reducing crew and equipment stress on rough terrain.
• The system saved one pair of road wheels per side (6 instead of 7) compared to traditional suspensions, reducing weight and simplifying maintenance. Advantages in Swiss terrain:
• On steep slopes, adjustable clearance and hydropneumatic suspension ensured stability, preventing rollovers (max lateral stability – 30°, longitudinal – 35°).
• High suspension energy capacity allowed navigation’ over rocks, roots, and uneven ground without chassis damage.
• Smooth ride reduced crew fatigue during prolonged mountain travel.
• Rapid clearance adjustment improved mobility in narrow passes and soft valley soils.

Working prototype of the hydropneumatic suspension unit.

The NKPz’s suspension was hydropneumatic, unlike the torsion bar suspensions common in 1970s tanks like the Leopard 2, M1 Abrams, and T-72. It consisted of hydropneumatic springs and hydraulic shock absorbers on each road wheel. The system was integrated with onboard hydraulics, powered by the APU and main engine, ensuring precise control and adaptability.

Protection

The NKPz’s protection system combined advanced technologies and thoughtful layout. Modular armor adapted to new threats, allowing replacement of damaged elements. Compartmentalization isolated the crew from ammunition and fuel, reducing injury risks. The main armor resisted modern armor-piercing rounds, with additional plates on the turret and sides enhancing resistance to heavy anti-tank weapons. A CBRN protection system ensured safety against chemical, biological, or nuclear threats. Ammunition was stored in the rear, minimizing detonation risks.

NKPz diagram with key components labeled.

NKPz schematic diagram showing the main elements.

Modular Armor: Documentation emphasizes the use of modular armor (modulare Panzerung), enabling adaptation to new threats by replacing or adding armor plates. This provided flexibility and modernization potential. Removable plates (zusätzliche Platten) on the turret and sides bolstered protection against cumulative and armor-piercing threats. These could be swapped or reinforced based on combat conditions. The document mentions “new special armor” (neue spezielle Panzerung), rated as the “third-best solution” (drittbeste Lösung) compared to other options, indicating a compromise between effectiveness and production complexity. Notably, even in West Germany in 1978–1979, composite armor with reflective plates was far from perfected. The NKPz’s armor prioritized modularity, compartmentalization, and front-drive integration, ensuring high crew survivability and flexibility against modern threats.

Compartmentalization: Principles and Implementation Compartmentalization in the NKPz was a core protective concept, aimed at minimizing hit consequences and enhancing crew survivability. This approach divided the tank’s interior into isolated compartments to localize damage from explosions, fires, or secondary effects. Key aspects: Principles:

• Isolation of critical zones: Crew, ammunition, fuel, and hydraulic systems were placed in separate compartments to prevent damage to one from affecting others.
• Reduced secondary effects: Isolation prevented fire, blast waves, or toxic gases from spreading to the crew compartment.
• Front engine and transmission placement: The engine at the front acted as a protective barrier, absorbing projectile energy and reducing crew injury risks.
• Ergonomic protection: Compartmentalization considered crew placement for maximum safety while maintaining access to controls. Implementation: Main compartments:
• Crew compartment (turret and front hull): Included the commander, gunner, and driver stations, isolated from ammunition and fuel. Armored partitions and sealed doors minimized secondary effect risks.
• Ammunition compartment (rear hull): Ammunition (44 rounds in autoloader belt magazines and 6 in turret armored containers) was stored in an isolated compartment with blowout panels to direct explosion energy outward.
• Fuel compartment: Fuel tanks were placed in isolated zones, away from the crew, with fire suppression protection.
• Engine compartment (front hull): The engine and transmission formed a protective block, absorbing projectile energy. The compartment was isolated from the crew to prevent fire or heat spread.
• Hydraulic compartment: Hydraulic systems (for the autoloader and turret) were separated to avoid high-pressure leaks during damage.

Controllability

The NKPz was designed with ergonomics and ease of use in mind, critical for militia service. The three-person crew interacted efficiently due to well-designed workstations and communication systems. The commander and gunner in the turret managed firepower, while the driver in the hull handled movement. Automation, including the autoloader and digital diagnostics, reduced crew workload. Intuitive interfaces and monitoring systems simplified field operation.

Maintenance and Training NKPz maintenance focused on simplicity and reliability. Automatic diagnostics and modular design reduced repair times. Support ranged from crew-level to specialized workshops. Integration with Swiss Army infrastructure streamlined logistics. Crew and technician training was tailored to the militia system, using existing simulators and methods for continuity with the Pz 68. Courses covered operation, maintenance, and repair, accommodating various personnel levels.

Vehicle Family

The NKPz was a comprehensive platform combining advanced technology, high combat effectiveness, and adaptability to Swiss Army conditions. The 1979 development strengthened Switzerland’s defense, creating a versatile tool to counter modern challenges. Its modular design and vehicle family unification made it promising for upgrades. The NKPz served as the basis for a vehicle family, including recovery vehicles, bridge layers, anti-aircraft systems, and self-propelled artillery. All vehicles shared the running gear, engine, and logistics, reducing costs. The NKPz’s front drive suited both combat and support vehicles, including rear-engine variants, ensuring standardization and simplified supply. The NKPz family included:

• Armored recovery vehicles for equipment repair.
• Bridge layers for rapid crossing construction.
• Artillery tanks for fire support.

Production Plans

1978–1979: Interim development phase, allocated 30 million Swiss francs. This phase included design, technical documentation, and a wooden mockup presented at the military delegation meeting on January 29, 1979. Contraves AG was to act as the general contractor, coordinating Swiss firms like SLM (transmission) and Sauer (engine). Production was planned at Swiss factories to ensure independence and support national industry. Prototype development and testing were to be completed by 1985, costing 230 million francs.

NKPz development and testing costs.

Plans for prototype production, serial production, and delivery to the armed forces.

Planned timeline:

• 1978–1981: Design completion and prototype construction.
• 1981–1983: Prototype testing.
• 1985–1986: Start of serial production for the first tank series.
• Early 1990s: Full replacement of Centurion and partial replacement of Pz 61. Plans targeted replacing 300 Centurion tanks by 1995, followed by 150 Pz 61 tanks, suggesting production of at least 450 NKPz tanks long-term. The first series, planned for procurement in 1985–1986, likely included 100–200 tanks to initiate rearmament and assess serial production.

NKPz chassis test stand.

Functional prototypes for drive and steering, individual components for mechanical and reverse gearboxes.

EV1TL engine prototype on a test stand.

NKPz Technical Specifications

Issues and Reasons for Termination At the January 29, 1979, meeting, Contraves presented the NKPz concept, including a wooden model. However, the project faced several issues:

• High cost: Development and procurement were estimated at 2 billion francs, raising concerns amid budget constraints.
• Technical risks: The autoloader and new armor were considered potentially unreliable.
• Political context: The Pz 68 “tank scandal” eroded trust in national developments.
• Competition with Leopard 2: The German tank was already in serial production, making it more appealing. Consequently, the program was halted before completing the detailed prototype configuration. Thus, technical documentation prepared before the program’s end (December 3, 1979) remains incomplete. In December 1979, the Federal Council suspended the NKPz project, initiating a request for proposals from Germany (Leopard 2), France (AMX-40), Israel (Merkava), the UK (Challenger 1), and the USA (M1 Abrams). After 1981 trials, the Leopard 2 was selected as the Pz 87. The NKPz showcased Switzerland’s engineering potential. Its front drive, modular armor, and digital FCS anticipated modern trends. The project’s experience influenced Pz 68/88 upgrades and Leopard 2 procurement. The NKPz also highlighted the need to balance ambition with financial realities. Maintaining tank-building expertise and independence in crises remained key arguments for development, but economic constraints prevailed.

NKPz 1:10 scale mockup.