Need rope? We have options. Sold by the foot. NRS Rescue Rope - 100% polypropylene for superior buoyancy. Kernmantle construction. The 1/4" has 950 lbs tensile strength & the 3/8" has 1900 lbs tensile strength. Sterling WaterLine Rescue Rope - Polypropylene sheath delivers excellent buoyancy. Nylon core. Ideal for swiftwater rescue app