Underwater Boat Lift Bag Leak Proof Welded Seams Eco Friendly Materials High Visibility Colors
Product Description
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.
Case Study
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.
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
- Superior Buoyancy and Controlled Ascent: The Boat Lift Helper provides exceptional lifting force, ranging from 1 ton to over 50 tons per bag depending on the model. The cylindrical design ensures even distribution of buoyancy, reducing rotational forces and minimizing tilt during ascent.
- Durable Tear Resistant Construction: Constructed from high-strength double-coated PVC or polyurethane fabric, the Boat Lift Helper resists abrasion, punctures, UV exposure, and saltwater corrosion.
- Rapid Deployment and User Friendly Design: The lift bag's lightweight, rollable design allows easy transport to the operational site, even in remote or hard-to-access areas.
- Enhanced Safety and Monitoring Features: Safety is paramount in underwater lifting, and the Boat Lift Helper is equipped with high-visibility panels, color-coded straps, and optional lift indicators for surface monitoring.
Applications
- Boat and Yacht Salvage: The lift bag is ideal for recovering sunken boats, yachts, or small commercial vessels.
- Marine Construction and Infrastructure Maintenance: In underwater construction projects, the Boat Lift Helper supports the installation and removal of pilings, anchors, pipelines, and subsea structures.
- Emergency Salvage and Rescue Operations: During disaster response or emergency scenarios, the lift bag stabilizes overturned vessels, assists in underwater recovery, or provides temporary flotation support for submerged equipment.
- Versatile Industrial and Offshore Applications: The modularity of the Boat Lift Helper allows it to adapt to both small-scale lifts and large, complex operations.
Why Choose Hongruntong Marine?
- Innovative R&D and Product Development: Hongruntong Marine invests heavily in research and development to ensure the Boat Lift Helper meets evolving operational needs.
- Rigorous Manufacturing Standards and Quality Control: All Boat Lift Helper units are produced in ISO 9001-certified facilities.
- Proven Performance in Global Projects: Hongruntong Marine lift bags have been deployed in over 30 countries, including Europe, North America, and Southeast Asia.
- Comprehensive Customer Support and After-Sales Service: We provide full technical guidance, including detailed manuals, training videos, and on-site operational support.
FAQ
1. What lifting capacities are available?
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.
2. How should the bags be inflated and monitored?
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.
3. What maintenance is recommended?
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.
4. Can the bags be used with existing lifting equipment?
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.
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