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| Categories | Boat Lift Helper |
|---|---|
| Brand Name: | Hongruntong Marine |
| Model Number: | HM-BLH16 |
| Certification: | ISO, BV, ABS, DNV, LR, SGS, CCS, RMRS |
| Place of Origin: | China |
| MOQ: | 1 |
| Price: | US$18-US$733 |
| Payment Terms: | L/C, T/T, D/A, D/P, Western Union, MoneyGram |
| Supply Ability: | 2520 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 |
| Company Info. |
| Hongruntong Marine LLC. |
| Verified Supplier |
| View Contact Details |
| Product List |
Marine Lift Bag Powerful Buoyancy Quick Inflation Durable Design
Description
The Boat Lift Helper is a versatile lifting solution designed to make underwater lifting operations safer and more efficient. Engineered for maximum buoyancy control and stability, it enables operators to lift boats, submerged structures, or marine equipment with minimal effort and risk. Its robust construction ensures reliability even in challenging underwater conditions.
Case Study
In 2023, a diving team in Rotterdam successfully used 10 Boat Lift
Helper units to lift and stabilize a 20-ton sunken ferry section.
By gradually inflating each bag and securing the load with
reinforced straps, they achieved a controlled ascent with zero
sway, allowing the vessel to be safely towed for repairs. This
operation demonstrated the product’s efficiency and precision in
heavy-lift scenarios.
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 | Buoyancy | Diameter | Length | Appr. Weight | ||
| Cylindrical | [kg] | [lbs] | [mm] | [mm] | [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 Control
Provides consistent lifting force and smooth, controlled ascents.
Adjustable valves allow precise inflation to match the load
requirements.
Durable and Resistant Construction
Made from heavy-duty, abrasion-resistant fabric, the lift bag
resists wear, UV exposure, and saltwater corrosion. Reinforced
seams ensure long-lasting performance.
Quick Deployment and Ease of Use
Compact design allows easy transport and setup. Multiple attachment
points enable secure rigging and safe lifting of various loads.
Enhanced Diver Safety
High-visibility panels and anti-tear patches improve monitoring and
operational safety during underwater lifting tasks.
Applications
Applications
Boat Salvage
Lift sunken boats, yachts, and commercial vessels efficiently.
Marine Construction
Assist in positioning or removing underwater structures, anchors, and pipelines.
Emergency Operations
Stabilize overturned boats or provide temporary flotation support for rescue missions.
The modular nature of the lift bags allows them to be used individually or in groups, accommodating both small and large-scale lifting projects.
Why Choose Hongruntong Marine?
Innovative Engineering
Advanced design ensures optimal buoyancy distribution, stable ascent, and predictable performance.
Quality Manufacturing
ISO 9001-certified production with rigorous seam, fabric, and valve testing guarantees long-term reliability.
Proven Global Performance
Used by marine contractors worldwide for high-stakes salvage and underwater lifting projects.
Comprehensive Support
Includes operation manuals, maintenance training, spare parts supply, and on-site technical guidance.
FAQ
1. What is the lifting capacity?
Up to 60 tons per bag, multiple bags can be combined for larger
lifts.
2. How to maintain the bag?
Rinse with fresh water, inspect seams and valves, store deflated in
a shaded area.
3. Operating conditions?
Works from -20°C to 60°C, resistant to UV, saltwater, and
chemicals.
4. Can it be used with cranes or winches?
Yes, reinforced D-rings and straps fit standard rigging and lifting
equipment.




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