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The Boat Lift Helper, also known as Cylindrical Underwater Lift Bags, is a professional-grade buoyancy aid designed to safely lift, support, or salvage vessels and underwater structures. Made from heavy-duty, tear-resistant coated fabrics, these lift bags provide reliable buoyant force in both shallow and deep-water conditions.
Key Advantages
Cylindrical design minimizes sway and rotational forces during ascent
Heavy-duty, tear-resistant coated fabrics for durability
Reinforced D-rings and straps for secure attachment
High-visibility panels for diver monitoring
Quick deployment and controlled ascent
Case Study
In 2023, a marine salvage company in Miami used 12 Boat Lift Helper units to recover a 12-ton fishing vessel that had sunk at a marina entrance. The cylindrical lift bags were deployed by a three-diver team in less than 30 minutes, resulting in a 40% time reduction compared to traditional square-style lift bags.
Technical Specifications
Product Name
Boat Lift Helper
Raw Material
PVC Coating Fabric
Type
Cylindrical
Available Sizes
500kg, 1000kg, 5000kg, 10000kg, etc.
Thickness
0.4-1.2mm (or as requested)
Color Options
Yellow, Blue, Black, etc.
Safety Factor
7:1
Model Specifications
Model
Buoyancy (kg)
Buoyancy (lbs)
Diameter (mm)
Length (mm)
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
*Note: Other sizes can be customized according to requirements.
Key Features
High Buoyancy and Stable Ascent: Offers buoyant force from 1 ton to over 50 tons per bag with controlled ascent.
Heavy Duty Tear Resistant Fabric: Double-coated, high-strength PVC or polyurethane fabric resists abrasion, tearing, UV exposure, and chemical corrosion.
Quick Deployment and Easy Handling: Compact, rollable design allows for easy transport and deployment by a single diver in under 5 minutes.
Safety and Control Features: Equipped with overpressure relief valves, multiple inflation ports, and high-visibility colors.
Applications
Boat and yacht salvage operations
Marine construction and maintenance
Emergency response and rescue operations
Underwater placement or removal of structures
Why Choose Hongruntong Marine?
20+ years of marine equipment manufacturing experience
ISO 9001-certified production facility
Rigorous quality control and testing procedures
Global client base in over 30 countries
Comprehensive after-sales support and training
Frequently Asked Questions
What lifting capacities are available?
Models range from 1-ton to 50-ton buoyancy per bag, with multiple bags combinable for larger loads.
How should the lift bags be maintained?
Rinse with fresh water after use, inspect for wear, and store deflated in a dry area. Properly maintained bags last 8-12 years.
What are the operating conditions?
Designed for -20°C to 60°C, resistant to UV, hydrocarbons, and saltwater. Can be inflated with standard scuba cylinders or compressors.
Product Images
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
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...
