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A family obscured by its names
The Renault NC program sought to improve the Renault FT concept through new running gear, better mobility and changes in protection and automotive equipment. Its names are unusually important to its history. NC1, NC2, NC27, NC28 and NC31 do not form a simple, consistently applied sequence of standardized production models. The account explicitly warns that later writers have used some of these labels in different ways. Sources
NC2 and NC28 designations occur in accounts of Char D development, but their precise use varies by source. NC31 belongs to the French pre-series development leading toward the D1, not automatically to a separate export fleet. The purpose of the family tree is to expose those relationships rather than make the naming problem disappear. Sources
Improving the FT without preserving all of it
The FT provided a successful arrangement for a small turreted tank, but its limited speed and running gear encouraged further development after the war. The NC work retained an identifiable ancestry while changing important components. The account traces two prototype approaches from a 1923 program: an NC1 with metal tracks and a different suspension, and an NC2 associated with flexible Kégresse tracks. Their development and test dates are distinguished rather than replaced with the export label’s apparent year. Sources
The metal-track approach is associated with the NC27 export designation. The flexible-track approach offered a different mobility solution but is not established as just another name for the same chassis. Accounts describe later widening, changes in crew accommodation, radio provision and turret development along the route to Char D. Sources
The NC31 group is described as ten French pre-series Char D vehicles. Its temporary turret arrangements and development context are not proof of the same configuration on all later D1s. The source rejects a simple identification of NC31 as a Chinese production or export model; any such claim remains outside the confirmed account until a documentary basis is established. Sources
Running gear, protection and the two-man layout
The early metal-track NC retained a compact arrangement with a driver forward, a single turret occupant and the engine to the rear. Its suspension, track layout and engine installation were central differences from the FT. Accounts describe vertical spring elements and multiple small road wheels, with a roughly 60 hp engine in the NC1 account. Reported speed rises to approximately 18–20 km/h, but reliability and the conditions of the trials matter as much as a published maximum. Sources
The specifications distinguish dimensions, weights and power outputs by configuration. NC2 figures are less consistent, including differing engine-output accounts, and the later wider vehicles belong to another phase. Armor values are likewise source-sensitive. A generic family maximum cannot establish that every plate on every exported NC27 had that thickness. Sources
Armament needs the same discipline. A 37 mm gun, a machine-gun installation, a turret photographed on a trial chassis and a weapon fitted after export are distinct pieces of evidence. Ammunition stowage is not securely documented for every configuration, so it has not been filled by copying an FT allowance. The two-man arrangement also concentrated observation, command and weapon tasks on the turret occupant, even where mobility had improved. Sources
The published account of technical disappointment is not simply that the tank was slow. It concerns the reliability and suitability of the revised automotive system, the limits of small-crew operation and the difference between improved trial figures and a practical service vehicle. Later national modifications is reported as responses made to particular vehicles, not retroactively assigned to the French baseline. Sources
Export trials and national configurations
Japan and Sweden provide important parts of the NC story. The account commonly reports ten Japanese vehicles and describes them under the Otsu-gata designation. Subsequent engine and armament changes, including Japanese equipment, require dated configuration treatment. A photograph of an Otsu tank with a machine gun cannot establish the weapon carried by every imported vehicle throughout its service. Sources
Sweden acquired a single NC vehicle for evaluation as Strv fm/28. That acquisition was not the start of a large Swedish NC fleet. Accounts emphasize trials and automotive shortcomings, and the preserved example offers useful visual evidence when its later condition is clearly identified. Sources
Polish procurement is disputed. Published accounts variously give five NC1 and twenty-four NC2, five NC1 and one NC2, or one NC27 distinguished from five FT-Kégresse vehicles. Inconsistent names and categories may explain part of the disagreement, but the cited material does not resolve it. Sources
Smaller-recipient references involving Greece, the Netherlands and Yugoslavia need similarly careful handling. An evaluation, an offer and a confirmed delivery do not all create an operational fleet. Published figures therefore records the uncertainty rather than extending the tank’s service map through unsupported assumptions. Sources
Service evidence and the path toward Char D
The account connects Japanese NC-type vehicles with limited operations in Manchuria and Shanghai in 1931–1932. It retains caution over exact unit strength, weapon fit and action-level details. This evidence cannot be broadened into a general account of all Japanese tanks in China, or a claim that a photograph taken during one campaign establishes the vehicle’s performance across several years. Sources
French significance lay substantially in experimentation and the development path toward the Char D/D1. The NC program provides a way to understand successive changes in suspension, protection, crew arrangement and equipment. That relationship is stronger than a simplistic claim that every vehicle with an NC label was the same export tank. Sources
The Renault NC developments linked the earlier FT to later designs, including the D1. Developmental prototypes and pre-series vehicles complicate the chronology, while conflicting export accounts and uncertain specifications prevent a single fully resolved history of every NC designation. Sources
Using the gallery to explain the distinctions
The photographs cover an early NC1, an NC2 workshop view, an NC31, a Japanese Otsu vehicle and the preserved Swedish fm/28. This is more useful than five interchangeable pictures of a “Renault NC,” provided the captions preserve the distinctions. The workshop image does not prove a service record, and the wider NC31 cannot serve as the generic illustration for an NC27 technical description. Sources
The modern Swedish photograph is dated 2011. It can show the exhibited vehicle’s layout and running gear but does not certify the current museum state or an untouched original configuration. The other photographs retain their specific source claims and reuse questions. The best gallery would help readers recognize why the family names are difficult, rather than conceal the differences behind a single broad caption. Sources
Photograph and image credit
Background reading and references. Each photograph has its own source and credit.
Sources and further reading
Background reading and references. Each photograph has its own source and credit.
- S1 — Chars Français, “1924 Char Renault NC.” — Specialist French armor-history site —; accessed 2026-05-30.
- S2 — Tank-AFV.com / Tank Encyclopedia, “Renault NC 27.” — Secondary armor-history reference —; accessed 2026-05-30.
- S3 — Armor Archives, “Renault NC: Destined for Export,” translation of Yuri Pasholok article. — Secondary/translated research blog drawing on archival photographs and François Vauvillier research —; accessed 2026-05-30.
- S4 — Tank Encyclopedia, Mark Nash, “Otsu-Gata Sensha (Renault NC in Japanese Service).” — Secondary armor-history reference —; accessed 2026-05-30.
- S5 — The Tank Museum, “Renault FT-17.” — Museum collection page —; accessed 2026-05-30.
- S6 — Wikimedia Commons, “Category:Renault NC series.” — Media repository category with license metadata —; accessed 2026-05-30.
- S7 — Swedish Tank Museum Arsenalen, English landing page. — Museum website —; accessed 2026-05-30.