Landsverk L-60 / Strv m/38-m/40

Preserved Strv m/40L at Arsenalen, Strängnäs, photographed on 12 August 2011; modern museum condition applies.Wassen; CC BY 3.0.Image source·CC BY 3.0

Overview

The Landsverk L-60 began as a Swedish light-tank design intended for an international market and became the basis of the Swedish Strv m/38, m/39, m/40L and m/40K. The family combined a compact welded hull, torsion-bar suspension and a three-man crew. Its importance lay both in Swedish armored-force development and in an export lineage whose foreign adaptations is distinct from Swedish manufacture. Sources

L-60 development, deliveries, and service introduction occurred at different times. Early vehicles with a 20 mm gun differed from the Swedish 37 mm production configuration, and trial-turret photographs do not establish the equipment of an m/38 in service. Sources

Development and Swedish adoption

Landsverk’s work developed alongside Sweden’s effort to create a practical armored force with limited resources. Accounts associate the design with Otto Merker and describes its torsion-bar suspension as an important early application. It does not establish an unrestricted claim that this was the first tank of any kind to use the system. Demonstrations and foreign interest helped sustain a design whose initial commercial prospects extended beyond the Swedish Army. Sources

Ireland acquired two early export tanks. The Swedish development route introduced its own engine, turret, radio and weapon requirements. The resulting m/38 was delivered in 1938–1939, rather than simply entering service on the family’s 1934 research date. The m/39 followed with turret and control refinements, a second machine gun and improved gun depression. Its order and delivery dates also differ: the available evidence places the order in 1939 and deliveries in 1941, with gun supply contributing to delay. Sources

The next two production stages addressed different needs. The m/40L incorporated a revised engine compartment and automatic gearbox. The m/40K combined stronger protection, an extended hull, suspension changes and a more powerful Scania-Vabis engine. These changes were substantial enough to remain unconfirmed. Sources

Layout, armament and crew

The layout placed the driver in the hull and the main fighting position in a central turret, with the engine at the rear. Three crew had to divide driving, weapon operation, command and other tasks within a small vehicle. The turret arrangement reduced neither observation nor coordination to a simple matter of crew count: the references identify workload and internal space as continuing limitations and leaves exact communications procedures for further documentation. Sources

The early export configuration carried a 20 mm Madsen gun; Swedish production tanks used the 37 mm kanon m/38 strv. The m/38 is recorded with one 8 mm machine gun, while later Swedish versions carried two. Ammunition allowances varied, and the cited accounts do not consistently identify sight and radio installations. Sources

Armor increased through the family’s development. The early vehicles relied on relatively thin protection; later m/39 and m/40L references include applique armor, while the m/40K incorporated heavier armor into its construction. A later armored museum survivor is therefore not evidence that every tank left the factory in that condition. Armor values vary with model and plate location, while appliqué additions further complicate comparison. Sources

Powertrain and mobility

The original L-60 and the Swedish service models did not all share one engine. Increasing weight changed the balance between engine output and mobility, particularly when additional armor was installed. Sources

Road-speed figures fall in the mid-40 km/h range for the Swedish variants, with a higher figure listed for the original light export configuration. Those are nominal source specifications, not proof of equal cross-country performance or endurance across all models. The available evidence does not establish a consistent range figure from audited sources. It also lacks a manual-level reliability assessment of the automatic gearbox and later suspension changes. The appropriate comparison is therefore one of documented design changes, not an invented ranking of mechanical reliability. Sources

The early L-60 export design is associated with a Büssing-NAG engine. The cited specifications give a 145 hp Scania-Vabis 1664 for m/38, m/39, and m/40L, and a 165 hp Scania-Vabis L 603/3 for m/40K. Sources

Production and industrial organization

The Swedish production ledger in Published accounts describe sixteen m/38s, twenty m/39s, one hundred m/40Ls and eighty m/40Ks: 216 domestic production tanks. This total excludes the Irish exports, uncertain early prototype accounting, Hungarian derivatives and specialized proposals. Those exclusions are part of the definition of the total, not missing vehicles to add later. Sources

Landsverk produced the first three Swedish series. Karlstads Mekaniska Verkstad had the production or assembly role for the m/40K, within the Landsverk design lineage, while Landsverk was also engaged in larger-tank work. The sequence illustrates expansion through several industrial participants rather than a single uninterrupted batch of identical vehicles. Sources

Operators and service

Swedish service centered on neutrality defense, training and the growth of armored formations. The family did not acquire a Swedish battlefield record during the Second World War. Its value to Sweden was consequently different from the combat experience of related Hungarian vehicles: it provided equipment around which crews, maintenance organizations and armored units could develop. Sources

Ireland’s early export pair formed a separate service story. An active-service endpoint of 1953 is often cited, but reports of later retention leave the final disposal chronology uncertain. A tank’s continued physical existence in an army collection is not automatically evidence of continued front-line service. Sources

Reported Dominican use of former Swedish m/40L-family tanks introduces a later combat chapter, including accounts concerning 1965. Published accounts describe exact quantities, vehicle identities and losses as uncertain details. General documentation of the intervention supplies context but does not certify every tank-specific account. Hungarian Toldi and Nimrod histories similarly belong in their own family or specialized-vehicle records, with explicit links rather than duplicated Swedish production totals. Sources

Legacy and remaining evidence

The L-60’s significance rests on a combination of technical development, export influence and domestic force-building. Successive Swedish versions increased protection and revised automotive arrangements, but the resulting vehicles still belonged to a light-tank family. The account assesses their late-war limitations against stronger armor and antitank weapons without claiming a combat test that Swedish service never provided. Sources

The photographs document early demonstrations, the trial turret, Swedish production vehicles, and later museum condition rather than one unchanged configuration. Technical manuals, production records and individual service histories remain necessary to settle the detailed configuration questions. The family overview can establish that framework while leaving specialized proposals and uncertain individual modifications visibly unfinished. Sources

Photographs and image credits

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

Preserved Strv m/40K at Arsenalen near Strängnäs, photographed on 17 July 2013; modern museum condition applies.Adrian R. Johansson; CC BY-SA 3.0.Image source·CC BY-SA 3.0

Sources and further reading

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

Overview

Development and Swedish adoption

Layout, armament and crew

Powertrain and mobility

Production and industrial organization

Operators and service

Legacy and remaining evidence

Photographs and image credits

Sources and further reading

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