Marine Salvage Airbags Flexible Anti Aging Corrosion Resistanta
Description
Marine Salvage Airbags are specialized buoyancy devices engineered
for underwater lifting, refloating, and marine construction
support. Designed with advanced composite fabrics, these airbags
provide high tensile strength, superior airtightness, and
exceptional corrosion resistance, ensuring reliable performance
under harsh oceanic conditions. When inflated, Marine Salvage
Airbags generate controlled buoyancy that enables operators to lift
or reposition submerged objects safely and efficiently, whether in
shallow harbors or deep-sea environments.
Case Study: Barge Refloating Operation – Rotterdam Port,
Netherlands
In mid-2024, a construction barge used for dredging operations
capsized at Rotterdam Port due to uneven ballast distribution,
leaving the 18-ton structure partially submerged near a dockyard
entrance. The incident posed significant disruption risks to the
port’s cargo flow. Hongruntong Marine’s technical team was
commissioned to design a rapid salvage solution using Marine
Salvage Airbags.
After site evaluation and underwater inspection, the team deployed
six cylindrical airbags with a combined buoyancy of 25 tons. The
airbags were secured along the barge’s port and starboard beams
using high-strength webbing and steel shackles. Inflation was
carried out gradually through synchronized compressors, allowing
precise lift control to counterbalance residual water weight inside
the hull.
Within four hours, the barge was successfully refloated and
stabilized without hull deformation or environmental pollution. The
entire operation was completed within one tide cycle—two hours
faster than mechanical crane recovery. The client commended the
system’s simplicity, low operational footprint, and outstanding
control during the lift, marking another milestone for
Hongruntong’s Marine Salvage Airbags in European port applications.
Specifications
| Product Name | Marine Salvage Airbags |
| 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-MSA01 | 200 | 441 | 500 | 1,000 | 5 |
| HM-MSA02 | 500 | 1,103 | 800 | 1,000 | 8 |
| HM-MSA03 | 1,000 | 2,205 | 1,000 | 1,500 | 11 |
| HM-MSA04 | 2,000 | 4,410 | 1,300 | 1,500 | 20 |
| HM-MSA05 | 4,000 | 8,820 | 1,600 | 2,000 | 50 |
| HM-MSA06 | 6,000 | 13,230 | 2,000 | 2,000 | 66 |
| HM-MSA07 | 8,000 | 17,640 | 2,000 | 2,600 | 75 |
| HM-MSA08 | 10,000 | 22,050 | 2,400 | 2,400 | 80 |
| HM-MSA09 | 15,000 | 33,075 | 2,600 | 3,000 | 110 |
| HM-MSA10 | 20,000 | 44,100 | 3,000 | 3,000 | 130 |
| HM-MSA11 | 30,000 | 66,150 | 3,000 | 4,500 | 170 |
| HM-MSA12 | 50,000 | 110,250 | 4,000 | 4,000 | 220 |
| HM-MSA13 | 70,000 | 154,350 | 4,000 | 5,700 | 310 |
| HM-MSA14 | 100,000 | 220,500 | 4,000 | 8,000 | 450 |
| HM-MSA15 | 150,000 | 330,750 | 5,000 | 8,000 | 660 |
| HM-MSA16 | 200,000 | 441,000 | 5,000 | 10,000 | 900 |
| *Note: Other sizes can be customized according to the requirements. |
Features
Reinforced Composite Structure for Harsh Conditions
Marine Salvage Airbags are built with reinforced layers of
high-tenacity polyester fabric coated with heavy-duty PVC or
polyurethane. This provides excellent tensile strength, puncture
resistance, and impermeability. Each airbag undergoes precision
heat-welding and seam testing to ensure no leakage under maximum
load. The material’s anti-UV and anti-oil properties allow
long-term use in seawater, oil-contaminated zones, or riverine
operations.
Smart Inflation and Pressure Regulation System
Equipped with precision-engineered valves, Marine Salvage Airbags
allow operators to control inflation in real-time, enabling fine
buoyancy adjustments. The modular design supports both simultaneous
and sequential inflation, preventing uneven stress distribution. A
pressure relief system automatically releases excess air to avoid
over-inflation, significantly improving underwater safety and
operational accuracy.
Efficient Transport and Deployment
Compact and lightweight, the airbags can be rolled, packed, and
transported easily to any offshore or port site. During operations,
divers can rapidly secure the airbags to structural attachment
points with stainless steel D-rings and load straps. This ease of
transport and quick setup reduces on-site preparation time, making
them ideal for time-sensitive salvage or construction projects.
Multi Layer Safety Assurance
Marine Salvage Airbags integrate several safety measures, including
dual inner chambers, overpressure protection valves, and real-time
surface pressure monitoring. Even if one chamber is damaged, the
secondary chamber maintains sufficient buoyancy to stabilize the
object. This redundancy ensures operational reliability and
minimizes the risk of accidents during complex underwater
operations.
Applications
Port Barge and Tugboat Recovery
Perfect for use in busy commercial ports, Marine Salvage Airbags
efficiently lift sunken barges, tugboats, or pontoon structures
without the need for large cranes. The modular buoyancy design
allows safe and flexible refloating operations in narrow waterways.
Marine Construction and Piling Support
In offshore or harbor engineering, these airbags provide buoyant
support for pipelines, steel piles, or underwater concrete modules.
Their controlled inflation allows gradual lowering or precise
positioning of heavy components on the seabed.
Salvage and Debris Removal
Marine Salvage Airbags are also widely applied in environmental
cleanup and wreckage removal operations. They can lift debris,
containers, or submerged machinery, helping restore navigable
waters and maintain port safety.
Why Choose Hongruntong Marine
Decades of Operational Expertise
Hongruntong Marine combines over 15 years of experience in
underwater lifting, salvage, and marine logistics. Our team of
engineers and divers has participated in numerous international
projects across Asia, Europe, and the Middle East, earning a
reputation for reliability and technical precision.
Engineering Customization for Every Scenario
We design Marine Salvage Airbags tailored to each project’s
conditions—whether it involves vessel tonnage, water depth, or
environmental restrictions. From material selection to valve
configuration and lifting geometry, every specification is
customized for maximum efficiency and safety.
Comprehensive Global Support
Hongruntong Marine provides complete technical assistance,
including pre-operation planning, on-site supervision, and
post-salvage inspection. Our global service network ensures prompt
response and full support for marine contractors, port authorities,
and offshore operators worldwide.
Certified Quality and Safety Assurance
All Marine Salvage Airbags are manufactured under strict ISO and
CCS quality systems. Each unit undergoes hydrostatic, pressure, and
endurance testing before shipment. This guarantees consistent
performance under demanding marine environments and compliance with
international maritime safety standards.
FAQ
1. What is the buoyancy range of Marine Salvage Airbags?
They are available in multiple capacities from 1 ton to over 80
tons. Airbags can be combined for larger lifting operations.
2. Can these airbags operate in strong currents or shallow water?
Yes. Their cylindrical design and balanced buoyancy allow stable
lifting in both shallow and turbulent water environments.
3. How long do Marine Salvage Airbags last?
With proper maintenance and storage, they can be used for over 8–10
years, even in frequent saltwater operations.
4. What safety features are built into the airbags?
They include dual-chamber construction, automatic pressure relief
valves, and surface pressure monitoring systems to prevent
accidents.
5. Can Hongruntong Marine assist with on-site setup and operation?
Yes. Our technical team provides full project support, including
planning, installation, and diver training for safe and effective
use.
