"The Billy Pugh pilot ladder, part number R1-Pilot Ladder, features the same specifications as the R1-N, with the added design of having every 10th rung measuring 70" in length. Each rung measures 1" x 4 1/2" x 20" and includes a non-skid surface for secure footing. The rungs are painted international orange for high visibility and are spaced 14 inches apart. They are supported by 7/16” diameter double braid nylon ropes, dipped in urethane to resist fire chemicals and enhance durability. With stainless steel thimble eyes measuring 9/16", each rung supports a safe work load of 400 lbs, making it suitable for various marine and industrial applications."