Boat Lift Helper Easy Transport Extreme Strength Long Lasting Performance

The Boat Lift Helper, also known as Cylindrical Underwater Lift Bags, is a high-performance buoyancy system designed for underwater lifting, stabilization, and salvage operations. Built with reinforced, tear-resistant materials, it delivers safe, stable, and efficient lifting power for boats, submerged equipment, and marine structures. Its cylindrical shape reduces drag and lateral forces underwater, enabling precise control during lifts.

Compared with pillow-style lift bags, the Boat Lift Helper provides more predictable ascent behavior and faster deployment. Divers can easily transport and set up the bags, even in challenging underwater conditions. This product has become a trusted choice for professional salvage divers, offshore contractors, and emergency responders worldwide.

In 2024, a Japanese port authority used 8 Boat Lift Helper units to lift and relocate a 25-ton concrete pontoon damaged in a typhoon. The bags were attached by a two-diver team and inflated gradually to achieve neutral buoyancy before moving the pontoon to a repair area. The operation was completed in just 3 hours--50% faster than using traditional steel pontoons or crane barges.

Note: Other sizes can be customized according to the requirements.

Boat Lift Helper bags deliver up to 60 tons of lifting force per unit. Overpressure relief valves and dual inflation ports give divers precise control of ascent speed and stability, minimizing the risk of uncontrolled rises.

Manufactured with double-layer, heavy-duty coated fabric and RF-welded seams, these bags are built for high stress and harsh underwater environments. Integrated anti-tear safety patches provide extra protection when handling jagged or abrasive loads.

Each bag can be rolled into a compact size for transport. Standard air fittings allow inflation from scuba cylinders or compressors. Multiple attachment points let operators secure loads in different configurations, from vertical lifts to horizontal stabilization.

High-visibility panels and color-coded straps make it easy to identify bag position underwater. Optional lift indicators allow operators on the surface to monitor inflation and load position in real time for added safety.

• Heavy Vessel Recovery: Ideal for lifting sunken fishing boats, barges, or small ferries. Cylindrical lift bags provide a balanced and safe lift, reducing the risk of damage during recovery.
• Pipeline Subsea Equipment Installation: Perfect for positioning or removing underwater pipelines, valves, and other marine infrastructure. Their shape minimizes current drag, allowing accurate placement.
• Emergency Salvage Rescue: Useful for stabilizing overturned vessels, raising crashed aircraft sections, or supporting emergency flotation equipment during disaster response.

Our design team continuously improves the buoyancy and safety of Boat Lift Helper models. Using 3D modeling and fluid-dynamics simulations, we create lift bags with superior performance in real-world marine conditions.

All Boat Lift Helpers are produced in ISO 9001-certified facilities. Each bag undergoes full buoyancy and leak testing before shipment. Quality checkpoints cover fabric integrity, seam weld strength, valve performance, and attachment durability.

Hongruntong Marine equipment has supported projects in over 30 countries. In 2023, a European salvage company used our lift bags to recover a 180-ton floating dock section after a storm--successfully and ahead of schedule.

We provide detailed operation manuals, training videos, and 24/7 technical assistance. Spare parts such as valves and straps are always in stock. For large-scale or specialized lifts, our engineers can offer on-site guidance to ensure smooth and safe operations.

Models range from 1-ton to 60-ton buoyancy per bag. Operators can combine multiple units to achieve larger lifting capacities, for example, five 20-ton bags to lift a 100-ton structure.

Use standard scuba cylinders or low-pressure compressors. Inflate gradually while monitoring the load. Use the overpressure relief valves to control ascent speed. Always vent air slowly at the surface before disconnecting.

After each operation, rinse bags with fresh water, check seams and valves for wear, and store deflated in a cool, dry place. Routine inspection every 6 months will extend service life to 10 years or more.

Yes. Reinforced stainless-steel D-rings and webbing straps accommodate shackles, chains, and slings. In a recent salvage operation in Canada, our bags were used with a crane barge and custom rigging frame to lift a 35-ton dock section.