Heavy-duty balloons offer maximum resistance to breakage thanks to the two multiple solid ropes reinforced with arms. Tested for durability and flexibility at temperatures from -30°C to +50°C, they feature high abrasion resistance and high energy absorption (up to 3.8 tons for F-13), making them suitable for vessels up to 1500 tons (F-13). They are widely used by recreational boats, ferries, fishing, and commercial ships.