For big vertical jobs, like 100-foot storage tanks and ship hulls, more and more contractors are moving up to the NLB SRT-10-W1 Crawler. While personnel stay safely on the ground, it crawls up, down and sideways — directed from wireless controls — while rotating SPIN JET® nozzles do all the work. The Crawler uses a vacuum system to grip the surface and to recover wastewater and debris, minimizing clean-up. A winch skid assembly with locking pulleys allows an operator to position the unit and also serves as a fall arrest system. The SRT-10-W Crawler can clean over welds and plate laps as thick as ½” (12.7mm).