... In addition, emergency device is provided to drive rotary table via drawworks one in emergency for reliable drilling operations ... depth, m114mm(4½") drill pipe2500-40003500-50004500-7000127mm(5") drill pipe2000-32002800-45004000-6000Max. hook load, kN ... driveMastTypeKHeight, m4345Max. load, kN225031504500Racking board height, m24.5,25.5,26.5SubstructureTypeSwing lift or sling-shotFloor height, m7. ...