Maximum rupture resistance is achieved through two multiple reinforced solid ropes. Tested for durability and flexibility at temperatures from -30°C to +50°C, the heavy-duty balloons feature high abrasion resistance and high energy absorption, reaching up to 3.8 tons for the F-13 model. They are suitable for vessels up to 1500 tons (F-13). In addition to their use on recreational boats, the cylindrical balloons of the F series are widely used by ferry boats, fishing, and commercial vessels.