Designed to meet the NFPA 1983 specification for a floating water rescue throwline, our NFPA Throwline, made with a Dyneema core and polypropylene sheath, handles extremely well. The bright yellow color is highly visible. Rope is sold by the foot. Please contact customer support for maximum length available. NFPA 1983 Throwline Performance Requirements nMinimum Breaking Strength of 13 kN (2,922 lbf). Minimum diameter of 7 mm (7/64 in) and a maximum diameter of 9.5 mm (3/8 in). After a 24-hour immersion in water, the entire length of the throwline must float to the surface within one minute. Throwlines: A Safe Choice nA throwline bag is the safest way to reach a subject in fast-moving or still water. It provides a downstream safety backup when rescuers must enter the water. Throwline bags should be kept in patrol cars, ambulances and other emergency response vehicles.