Trafficability tests with the marsh screw amphibian

Abstract A program of field tests was conducted with the Marsh Screw Amphibian to evaluate its performance on a range of soil conditions. Performance was expressed in term of ability to travel 50 passes in the same path, manoeuvrability, speed, drawbar pull, ans slope-climbing ability. Soil conditions were described in terms of soil type, moisture content, density and cone index. Relations between vehicle performance and soil condition are presented.