Buoyancy Lift Bag Durable Tear Resistant Fabric Compact And Easy To Store
Product Description
The Boat Lift Helper is a professional lifting solution designed to provide precise, safe, and efficient underwater lifting for boats, marine equipment, and submerged structures. Constructed with heavy-duty, abrasion-resistant materials and reinforced seams, it ensures long-lasting durability and reliable performance even under demanding marine conditions. Its innovative design minimizes sway and lateral movement, providing operators with stable and controlled lifts every time.
The Boat Lift Helper is designed for rapid deployment, allowing divers or marine crews to transport, attach, and inflate the bag quickly. Multiple attachment points with reinforced D-rings enable secure connection to vessels, docks, or submerged equipment, while high-visibility panels allow continuous monitoring underwater. This combination of stability, safety, and ease of use makes it suitable for a wide range of operations, from routine maintenance to complex salvage projects.
Case Study
In 2024, a marine salvage team in the Gulf of Mexico successfully lifted a 30-ton sunken fishing vessel using 15 Boat Lift Helper units. The operation required careful planning due to strong underwater currents and nearby navigational traffic. Divers attached the lift bags along the hull in a staggered configuration, gradually inflating each bag to achieve neutral buoyancy. The vessel ascended smoothly with zero sway, allowing it to be towed safely to shore for repair. Compared to previous methods using pontoons and crane barges, the operation was completed 40% faster, with improved safety and reduced labor effort. This case demonstrates the Boat Lift Helper's ability to handle large-scale lifts efficiently, even in challenging environmental conditions.
The Boat Lift Helper is also widely used in offshore construction, maintenance of marine infrastructure, and emergency salvage operations. Its durability and modular design ensure compatibility with various rigging systems, making it a flexible and reliable tool for professional marine operators worldwide.
Specifications
| 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 Specifications
| 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.
Features
High Buoyancy with Precision Control
Each lift bag provides up to 60 tons of buoyancy, depending on the model. The cylindrical design ensures even distribution of lifting force, reducing tilt and sway. Overpressure relief valves allow operators to control ascent speed, ensuring safe, controlled lifts. Multiple inflation ports enable sequential inflation for complex loads, enhancing stability.
Heavy-Duty Tear Resistant Construction
Made from double-coated PVC or polyurethane fabric, the Boat Lift Helper resists abrasion, punctures, UV exposure, and saltwater corrosion. RF-welded seams maintain airtightness even after repeated heavy usage. Reinforced webbing straps and stainless-steel D-rings provide secure attachment points, making the bag suitable for lifting irregularly shaped or heavy objects.
Fast Deployment and User Friendly Design
Compact, lightweight, and rollable, the lift bag can be easily transported to remote or difficult-to-access sites. Standard scuba or low-pressure air fittings allow for rapid inflation, reducing operational time. Reinforced attachment points and modular design permit the combination of multiple bags for heavier loads, offering flexible solutions for different lifting requirements.
Enhanced Safety Features
High-visibility panels improve diver awareness underwater. Anti-tear patches and secondary securing straps provide additional safety during heavy lifts. Operational guidelines recommend slow, monitored inflation and continuous observation, reducing the risk of accidents while ensuring maximum control over the lifted load.
Applications
- Vessel Salvage: Efficiently lift sunken or capsized boats, yachts, and commercial vessels. Multiple bags can be used to balance weight distribution and prevent tilting during ascent.
- Offshore and Underwater Construction: Supports positioning and removal of pilings, anchors, pipelines, and subsea structures. Cylindrical design reduces drag in currents, allowing accurate placement of heavy objects.
- Emergency Response and Rescue: Stabilize overturned vessels or lift submerged equipment in disaster scenarios. Rapid deployment ensures timely response, while reinforced materials maintain reliability under harsh conditions.
- Industrial and Marine Projects: Modular use allows the Boat Lift Helper to handle both small-scale lifts and large, complex marine projects, compatible with cranes, winches, and standard rigging systems.
Why Choose Hongruntong Marine?
- Cutting Edge Engineering and Design: Hongruntong Marine invests heavily in R&D to optimize buoyancy, stability, and safety. Using fluid-dynamics simulations and stress testing, engineers refine bag geometry, valve placement, and attachment points for predictable performance in real-world underwater conditions.
- Rigorous Manufacturing and Quality Assurance: All lift bags are produced in ISO 9001-certified facilities. Each unit undergoes stringent testing, including hydrostatic and buoyancy tests, seam strength verification, and valve inspection.
- Proven Global Performance: Hongruntong Marine's lift bags are trusted by contractors and salvage teams worldwide. From lifting 300-ton floating dock sections in Norway to recovering 30-ton fishing vessels in the Gulf of Mexico.
- Comprehensive Customer Support and After Sales Service: We provide operation manuals, training materials, and 24/7 technical support. Spare parts, including valves and straps, are readily available.
FAQ
1. What lifting capacities are available?
Models range from 1 to 60 tons per bag. Multiple bags can be used together to lift larger loads, e.g., three 20-ton bags lifting a 60-ton vessel.
2. How should the bags be inflated?
Inflation can be performed using scuba cylinders, surface-supplied air, or low-pressure compressors. Gradual inflation with monitoring is recommended to prevent sudden ascent. Overpressure relief valves should be used to maintain safety.
3. How to maintain the Boat Lift Helper?
Rinse with fresh water after each operation, inspect seams, valves, and straps, and store deflated in a dry, shaded area. Routine inspection every six months ensures long-term reliability.
4. Can the lift bags be used with other rigging equipment?
Yes. Reinforced D-rings and webbing straps are compatible with shackles, slings, cranes, and winches. Ensure balanced attachment points and consider sequential inflation for larger, irregular loads to maintain stability.
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