Modernized TSL-underwater robot for tunnel and shallow-water inspection

TSL (tunnel sea lion) is a specialized self-propelled underwater vehicle with data-command link to operator on a support ship by fiber-optical cable. The autonomous use of TSL is possible. TSL is designed for sonar and video inspection of extended water-filled tunnels and for shallow-water applications. A modernized version of TSL that is currently used also as a carrier of sensors and equipment for execution of different scientific programs and students projects is described in the paper.