For a simple litter harness, which rope diameter is used as the minimum?

• A. 1/4 inch
• B. 3/8 inch
• C. 1/2 inch
• D. 3/16 inch

Answer: (B)

In a basic litter rescue setup, the rope must be thick enough to safely carry the load while still fitting through the litter’s hardware and handles. Three-eighths of an inch is the minimum diameter that provides adequate strength to support the patient and rescuers, even when knots and friction are involved. Ropes smaller than this are more prone to damage, knot weakening, or failing under load, which is unsafe for life-safety moves. A half-inch rope, while stronger, isn’t necessary for a simple litter harness and can add unnecessary bulk, stiffness, and handling difficulty. So, three-eighths inch hits the balance of safety, practicality, and compatibility with common rigging gear.