Editing Stridsvagn 103 (section)

===Alternative S===
As part of the Centurion purchase, the UK had supplied volumes of data from [[World War II]] and [[Korean War]] tank engagements. These demonstrated that a full half of all "kills" were due to hits on the turret or the turret ring. Hits on the lower portion of the tank were much more rare. These statistics also suggested that the chance of being hit was strongly related to the overall height of the tank.<ref name="Lindström"/>

In 1943, Berge had read reports of the 1940 French [[Char B1]] design. This featured a large (for the era) gun in the hull that was fixed in azimuth, and required the entire tank to turn to aim it. This was accomplished through the use of a complex transmission system under the gunner's control. Berge had also been part of the teams that examined German vehicles after the war, and was aware of the ability for short vehicles to quickly maneuver.<ref name="Lindström"/>

Berge combined these concepts for the S proposal. The suspension would be connected to a stabilizer from [[Bofors]] that would keep the entire tank stabilized as opposed to just the gun. He felt the stabilizers of the era did not offer the performance needed for real fire-on-the-move; while a first shot may be made on the move, the tanks generally stopped for follow-up shots. He felt that the advantage offered was limited, and that better protection when stopped would be more useful.<ref name="Lindström"/>

The resulting chassis was quite small, with only four road wheels, and the gun extended through the vehicle to the rear where the autoloader and ammunition was stored outside of the crew compartment. The resulting 30 ton design offered the same level of armour as the heavy tanks, but was better protected overall due to the external ammunition and very low profile.<ref name="Lindström"/>