ZVM 2901 Screw Vehicle

ZVM 2901 screw vehicle. JSC Plant of All-terrain Vehicles (ZVM) was founded in 2004 on the base of Engineering School of Nizhny Novgorod State Technical University, specialized since a long time with off-road mobility. Many wheeled and tracked models are marketed under this brand. http://zvm-nn.ru/en/node/83/tp-s-rvd#gallery, https://www.youtube.com/watch?v=jmeDa5g4POM

Screw Amphibious Vehicle Copperstone

Screw amphibious vehicle A-Rover 3 Copperstone Technologies (CST) offers Autonomous Amphibious Robots for environmental monitoring : bathymetric surveys, measuring soil properties, and geotechnical investigations in water and muddy grounds. Additionally, CST’s robots allow seed broadcasting, seedling planting, and other reclamation services on inaccessible locations. Built in Calgary, Alberta.  https://copperstonetech.com/products/, https://www.youtube.com/watch?v=NSXtxwrOFBA, https://www.youtube.com/watch?v=-fkfxBHrOZQ, https://www.youtube.com/watch?time_continue=51&v=hQdtoSjZhSM