High Buoyancy and Stable Ascent

Each Boat Lift Helper unit offers high buoyant force, ranging from 1 ton to over 50 tons per bag depending on the model. The cylindrical design distributes buoyancy evenly, reducing rolling forces on the load and ensuring a straight, controlled ascent. Pressure relief valves allow divers to fine-tune buoyancy underwater for maximum safety.

Heavy Duty Tear Resistant Fabric

Constructed from double-coated, high-strength PVC or polyurethane fabric, the lift bags resist abrasion, tearing, UV exposure, and chemical corrosion. Reinforced seams are RF-welded for maximum airtightness. In internal testing, the bags maintained 98% of their rated buoyancy after 100 repeated inflation/deflation cycles in saltwater.

Quick Deployment and Easy Handling

The compact, rollable design allows the bags to be transported easily by hand or in a small boat. Inflation is compatible with standard scuba cylinders or low-pressure air compressors. Integrated webbing straps and stainless-steel D-rings allow divers to attach the bag securely in seconds. A single diver can deploy and inflate a small bag in under 5 minutes.

Safety and Control Features

Each Boat Lift Helper is equipped with overpressure relief valves and multiple inflation ports for redundancy. High-visibility colors improve diver awareness. Optional anti-tear safety patches and secondary securing straps provide an extra layer of protection during heavy lifts or emergency recoveries.

Advanced RD and Product Innovation

Hongruntong Marine has over 20 years of experience in marine equipment manufacturing. Our R&D team uses advanced simulation software to optimize buoyancy distribution and structural integrity of every Boat Lift Helper model. All designs are validated through real-world testing in offshore conditions, ensuring unmatched reliability and performance.

Strict Manufacturing Process and Quality Control

Each lift bag is produced in an ISO 9001-certified facility. From raw material inspection to final testing, we apply rigorous quality standards. Every batch undergoes hydrostatic testing for buoyancy capacity, seam strength, and valve performance. Traceable serial numbers allow full product tracking and maintenance history, giving customers confidence in long-term performance.

Proven Track Record with Global Clients

Hongruntong Marine lift bags are trusted by salvage companies, navies, and offshore contractors in over 30 countries, including the US, Europe, and Southeast Asia. For example, our Boat Lift Helpers were used by a Norwegian firm to recover a 300-ton floating dock section in 2022, successfully completing the lift ahead of schedule.

Comprehensive Service and After-Sales Support

We provide full technical support, including deployment training, maintenance manuals, and 24/7 after-sales assistance. Spare parts such as valves and straps are readily available. Our service teams can also assist on-site for large or complex lifts, ensuring safe and efficient operations for every customer.

FAQ

1. What lifting capacities are available for the Boat Lift Helper?

We offer models ranging from 1-ton to 50-ton buoyancy per bag. Multiple bags can be combined to lift larger loads. For example, three 10-ton bags can safely lift a 30-ton vessel.

2. How should the Boat Lift Helper be maintained?

After use, rinse with fresh water to remove salt and debris. Inspect seams, valves, and straps for wear. Store deflated and rolled in a dry, shaded area. With proper maintenance, each bag can last 8–12 years in regular service.

3. What are the operating conditions for these lift bags?

They are designed for temperatures from -20°C to 60°C. The fabric resists UV exposure, hydrocarbons, and saltwater. Overpressure valves prevent accidental bursting during inflation. Bags can be inflated with standard scuba cylinders, surface-supplied air, or low-pressure compressors.

4. Are the bags compatible with other lifting or rigging equipment?

Yes. Reinforced D-rings and webbing straps fit standard shackles, chains, and lifting slings. They can be integrated with cranes, winches, or tow vessels for combined operations. For example, a salvage team in Florida used our bags with a crane barge to lift a 20-ton barge section.