PZInż 130 Amphibious Tank

Overview and intended role

The PZInż 130 was a Polish amphibious reconnaissance prototype intended to move across both land and inland water obstacles. Its two-man crew, small turret and light protection reflected a scouting requirement, not an expectation that it would fight as a heavily armored assault tank. The account establishes one completed prototype and a substantial testing program, but no series production or supported combat career. Sources

The familiar 1937 date belongs to the prototype and trials phase; design work was already underway in 1936. Its relationship to the land-based PZInż 140 is important without making the two vehicles identical. Common components and designers could support parallel projects with different hulls and movement requirements. Planned machine-gun or 20 mm cannon installations remain alternatives rather than additional completed vehicles. Sources

Development and tests

The background includes Polish interest in mobility across marshes, rivers and lakes, and observation of British amphibious demonstrations in 1932. The accounts distinguish that influence from a completed foreign procurement or a simple licensed copy. Edward Habich's PZInż design emerged within a wider domestic effort to develop light tracked vehicles and their automotive components. Sources

The prototype was associated with military handover in August 1937 and a later demonstration in October. Those can be different events, not necessarily rival dates for the same ceremony. The trial account describes an approximately 1,861 km autumn route with substantial cross-country travel and water tests. Further running in 1938–1939 produced differing cumulative-mileage figures. The exact logs remain necessary to establish whether the reported 3,500 and 5,000 km totals refer to different periods or definitions. Sources

Hull and amphibious arrangement

A sealed buoyant hull and additional flotation material distinguished the amphibious vehicle from its land-only relative. Accounts describe cork-filled side structures associated with the track covers and a rear propeller arrangement. The relationship between tracked movement and water propulsion mattered during entry and exit, but a general description is not a substitute for the original mechanical drawings. Sources

The driver occupied the forward crew area and the second man operated from the small turret. Light armor, listed broadly around 4–8 mm, kept weight within the flotation budget while limiting protection. Hatches, openings and sealing were consequently important design details. Published accounts describe these features attached to the documented prototype; it does not borrow later Soviet amphibious equipment simply because the intended role was similar. Sources

Proposed weapons and automotive equipment

The small turret, related in the cited sources to earlier Polish tankette experimentation, was intended for a machine gun or a proposed 20 mm weapon. These were alternative armament arrangements, not necessarily a simultaneous fit. The photograph shows the vehicle without a visible installed main weapon. It cannot establish that no armament test ever occurred, but the account does not justify a fully armed operational configuration. Sources

The PZInż 425 engine is generally assigned approximately 95 hp. Conflicting cylinder descriptions and suspension terminology remain unresolved in the cited sources and are retained in the review tasks. Published performance figures include about 60 km/h on land and 7–8 km/h in water, with a working weight near 3.92 tonnes. Range, height and other dimensions are source specifications, not independently measured results obtained in this preparation pass. Radio equipment is not firmly documented. Sources

Plans, industry and evaluation status

Only one prototype is established. The source preserves proposed weapon arrangements, related projects and industrial information, but does not support a production contract completed before the war. A PZInż custodian entry and an army evaluation entry describe relationships to the same machine, not two manufactured tanks. Exports and licensed foreign production are likewise not demonstrated. Sources

Procurement did not depend solely on whether the vehicle could float or complete a route. The account discusses limited industrial resources, other armored priorities and a decision not to proceed with amphibious production. Its tests therefore cannot be reduced to a simple pass-or-fail story. Sources

Capabilities and limitations in context

The intended reconnaissance role offered a reason to accept light armament and protection in exchange for water mobility. A vehicle able to scout across a watercourse could provide a different capability from a conventional light tank. Yet performance during testing would not alone establish survivability, communications effectiveness or sustained availability under combat conditions. Sources

The account supplies no combat record from which to calculate battlefield success. The amphibious prototype belongs in the encyclopedia as a distinct engineering and procurement effort, not as a tank with an invented service history. Sources

Photographs, fate and reference limits

The surviving photographic reproduction is a small, anonymous side view. It is useful for overall hull shape, turret form and running gear but does not provide a complete view of the propeller, sealing arrangements or interior. Sources

No surviving original vehicle is established by the account. Its final fate, possible capture and later exhibition references remain unconfirmed. Those limits do not make the project unimportant: the PZInż 130 records an attempt to address a specific reconnaissance problem with domestic design and common components. They do require the article to distinguish what was built, what was planned, what was tested and what remains unknown. Sources

Sources and further reading

Background reading and references. Each photograph has its own source and credit.

Overview and intended role

Development and tests

Hull and amphibious arrangement

Proposed weapons and automotive equipment

Plans, industry and evaluation status

Capabilities and limitations in context

Photographs, fate and reference limits

Sources and further reading

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