Hongruntong Marine LLC.
| Payment Terms | L/C, T/T, D/A, D/P, Western Union, MoneyGram |
| Supply Ability | 6300 Pcs Per Month |
| Delivery Time | 5-7 Work Days |
| Packaging Details | Wooden Pallets, Wooden Box |
| Product Name | Boat Lift Helper |
| Reinforcement | Nylon Fabric |
| Material | PVC Coating Fabric |
| Feature | Durable Construction, Easy Filling and Emptying |
| Thickness | 0.4mm-2.5mm, Or as Request |
| Lifting Capacity | 200kg to 50 Tons |
| Warranty | 36 Months |
| Valve | Inflation and Pressure Release |
| Color | Black, Yellow, Orange, Or as Request |
| Application | Structural Load Testing, Proof Load Testing |
| MOQ | 1 |
| OEM | Welcome |
| Brand Name | Hongruntong Marine |
| Model Number | HM-BLH17 |
| Certification | ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS |
| Place of Origin | China |
View Detail Information
Explore similar products
Boat Lift Helper Easy Transport Extreme Strength Long Lasting Performance
Marine Lift Bag Powerful Buoyancy Quick Inflation Durable Design
Buoyancy Lift Bag Durable Tear Resistant Fabric Compact And Easy To Store
Parachute Design Cutting Edge Boat Lift Helper Bags For Even Weight Distribution
Product Specification
| Payment Terms | L/C, T/T, D/A, D/P, Western Union, MoneyGram | Supply Ability | 6300 Pcs Per Month |
| Delivery Time | 5-7 Work Days | Packaging Details | Wooden Pallets, Wooden Box |
| Product Name | Boat Lift Helper | Reinforcement | Nylon Fabric |
| Material | PVC Coating Fabric | Feature | Durable Construction, Easy Filling and Emptying |
| Thickness | 0.4mm-2.5mm, Or as Request | Lifting Capacity | 200kg to 50 Tons |
| Warranty | 36 Months | Valve | Inflation and Pressure Release |
| Color | Black, Yellow, Orange, Or as Request | Application | Structural Load Testing, Proof Load Testing |
| MOQ | 1 | OEM | Welcome |
| Brand Name | Hongruntong Marine | Model Number | HM-BLH17 |
| Certification | ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS | Place of Origin | China |
| High Light | underwater boat lift bag leak proof ，eco friendly boat lift bag ，high visibility boat lift bag | ||
The Boat Lift Helper is a professional-grade marine lifting solution designed to provide safe, efficient, and controlled underwater lifting of boats, submerged machinery, and other marine equipment. Built with high-strength, abrasion-resistant materials and reinforced seams, the Boat Lift Helper delivers consistent buoyancy and stability in a variety of operational conditions. Its cylindrical shape reduces lateral forces, minimizes sway, and allows for precise vertical ascent, making it ideal for both salvage and construction operations.
One of the core advantages of the Boat Lift Helper is its ease of deployment. Lightweight and compact when deflated, the lift bag can be quickly transported to the operational site and inflated using standard scuba cylinders or low-pressure compressors. Multiple attachment points with reinforced D-rings allow operators to secure the bag to vessels, platforms, or submerged equipment efficiently. Additionally, high-visibility color panels enable divers to monitor the bag's position and ascent in real-time, enhancing safety during underwater lifting tasks.
In 2023, a marine salvage company in Rotterdam faced the challenge of recovering a 20-ton sunken ferry section from a busy harbor. Traditional lifting methods using steel cranes and pontoons were risky and time-consuming, requiring several days to mobilize. The team opted to use 12 Boat Lift Helper units, deploying divers to attach the bags at multiple load points along the vessel hull. The bags were gradually inflated, creating neutral buoyancy and enabling a stable, controlled ascent without rolling or tilting. The vessel was successfully lifted to the surface in just six hours--a significant reduction in operational time compared to traditional methods. Divers reported improved maneuverability and control, while the harbor authorities noted minimal disruption to ongoing maritime traffic. This case demonstrates the Boat Lift Helper's reliability, efficiency, and adaptability in complex salvage operations.
The Boat Lift Helper is not only suitable for salvage but also widely used in underwater construction, emergency response, and maintenance operations. Its robust construction ensures durability in harsh environments, including saltwater exposure, UV radiation, and abrasion from sharp objects. With proper training and adherence to operational guidelines, this lift bag provides a safe and highly effective solution for a variety of marine lifting challenges.
| Product Name | Boat Lift Helper |
|---|---|
| Raw Material | PVC Coating Fabric |
| Type | Cylindrical |
| Size | 500kg, 1000kg, 5000kg 10000kg,etc |
| Thickness | 0.4-1.2mm, Or as request |
| Color | Yellow, Blue, Black, etc |
| Density | 0.33-0.9g/cm3 |
| Safety Factor | 7:1 |
| Tolerances | +/- 0.03 on Densities +/- 0.2 mm on Thickness +/- 0 to +3mm on Width +/- 0 to +3mm on Length |
| Model | Buoyancy (kg) | Buoyancy (lbs) | Diameter (mm) | Length (mm) | Appr. Weight (kg) |
|---|---|---|---|---|---|
| HM-BLH01 | 200 | 441 | 500 | 1,000 | 5 |
| HM-BLH02 | 500 | 1,103 | 800 | 1,000 | 8 |
| HM-BLH03 | 1,000 | 2,205 | 1,000 | 1,500 | 11 |
| HM-BLH04 | 2,000 | 4,410 | 1,300 | 1,500 | 20 |
| HM-BLH05 | 4,000 | 8,820 | 1,600 | 2,000 | 50 |
| HM-BLH06 | 6,000 | 13,230 | 2,000 | 2,000 | 66 |
| HM-BLH07 | 8,000 | 17,640 | 2,000 | 2,600 | 75 |
| HM-BLH08 | 10,000 | 22,050 | 2,400 | 2,400 | 80 |
| HM-BLH09 | 15,000 | 33,075 | 2,600 | 3,000 | 110 |
| HM-BLH10 | 20,000 | 44,100 | 3,000 | 3,000 | 130 |
| HM-BLH11 | 30,000 | 66,150 | 3,000 | 4,500 | 170 |
| HM-BLH12 | 50,000 | 110,250 | 4,000 | 4,000 | 220 |
| HM-BLH13 | 70,000 | 154,350 | 4,000 | 5,700 | 310 |
| HM-BLH14 | 100,000 | 220,500 | 4,000 | 8,000 | 450 |
| HM-BLH15 | 150,000 | 330,750 | 5,000 | 8,000 | 660 |
| HM-BLH16 | 200,000 | 441,000 | 5,000 | 10,000 | 900 |
*Note: Other sizes can be customized according to the requirements.
Boat Lift Helper units range from 1-ton to 60-ton buoyancy per bag. Multiple bags can be combined for larger lifts. For example, three 20-ton bags can lift a 60-ton load safely. Capacity selection should consider load weight, balance, and environmental conditions.
Use standard scuba cylinders, surface-supplied air, or low-pressure compressors. Inflate gradually while monitoring the load's ascent to prevent sudden rises. Overpressure relief valves should always be engaged, and divers should continuously observe bag position during inflation.
After use, rinse with fresh water to remove salt, debris, and chemical residues. Inspect seams, valves, and straps for wear before storage. Store deflated and rolled in a dry, shaded area. Routine inspection every six months or after heavy lifts will ensure a service life of 8-12 years.
Yes. Reinforced D-rings and webbing straps are compatible with shackles, chains, winches, and cranes. Operators should ensure balanced attachment points and consider using multiple lift bags for heavy or irregular loads to maintain stability and control.
Company Details
Business Type:
Manufacturer
Year Established:
1990
Total Annual:
5,256,780-5,593210
Employee Number:
220~360
Ecer Certification：
Verified Supplier
Hongruntong Marine is a leading marine company specializing in providing comprehensive services in the maritime industry. With a strong emphasis on quality, safety, and efficiency, we strive to meet the evolving needs of our clients. Established in 1990, Hongruntong Ma... Hongruntong Marine is a leading marine company specializing in providing comprehensive services in the maritime industry. With a strong emphasis on quality, safety, and efficiency, we strive to meet the evolving needs of our clients. Established in 1990, Hongruntong Ma...
Get in touch with us
Leave a Message, we will call you back quickly!