As lansen development continued into 1951 it was decided to redesign the hull to be more compact and to develop a new turret better suited for the long 84mm gun. By late march drawings for this version of the lansen was completed. This was followed in early April with work on revised drawings for a mock-up of the vehicle, which was completed and shown to the Swiss military later that year. But just as the development of the lansen seemed to be wrapping up Landsverk was suddenly overwhelmed with work from the Swedish military. And around the same time, the Swiss military started pursuing its own line of tank development which would eventually lead to the Pz58. And with no other buyers the Lansen ended up never making it further than the mock up stage.
The Lansen m/51 should be a solid tier 8 light tank. Although it is similar to the tier 7 it has a smaller turret profile and a better version of the 84mm gun. Its main strength would be the 84mm gun which could be devastating if given the right stats in combination with the gun depression. Unfortunately like the tier 7 lansen the biggest problem with this tank is its engine. Its likely that it would need engines proposed for the Leo medium tank, or have to have the lack of mobility compensated in other ways like with good soft stats.
Weight: 25 tonnes
Top speed: 60kph
Engine: x2 Scania-Vabis L 801 (440 hp)
Armament: 8.4cm Strvkan L/65, 8.4cm Strvkan L/75
Hull armour: 50/18/18 mm
Turret armour: 50/30/20 mm