Inflatable Buoyancy Bags Flexible High Strength UV Resistant
Compact Portable Design
Description
Marine Salvage Airbags are highly versatile underwater lifting
tools widely used in modern marine operations. They are made from
high-strength composite materials, providing excellent resistance
to corrosion, abrasion, and water pressure. These airbags allow
safe and controlled lifting of submerged objects, from sunken
vessels to heavy machinery, in both deep-sea and port environments.
Inflation generates precise buoyancy, enabling divers or ROVs to
raise objects steadily to the surface, reducing operational risks.
Case Study: Sunken Fishing Vessel Recovery in Singapore Port
In early 2024, a 12-ton fishing vessel sank near Singapore’s
commercial harbor due to unexpected hull damage. The local marine
rescue team deployed our Marine Salvage Airbags to recover the
vessel. After an initial survey using a diver team and sonar
imaging, the team determined optimal placement points for three
medium-sized airbags.
The airbags were secured around the hull, emphasizing key
load-bearing sections to avoid deformation. Gradual inflation using
compressed air ensured a controlled lift, keeping the vessel stable
even under tidal currents. Over the course of 5 hours, the fishing
vessel rose to the surface without secondary damage.
The operation demonstrated Marine Salvage Airbags’ superior
reliability under moderate currents and shallow-to-midwater depths.
The rescue was completed 30% faster than conventional
crane-assisted lifting, highlighting both time efficiency and
enhanced diver safety. This successful operation underlines the
airbags’ adaptability for small-to-medium commercial vessel
recovery in busy port areas.
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
High Performance Composite Construction
Marine Salvage Airbags are crafted from multi-layer polyester
fibers reinforced with PVC, forming a robust outer layer resistant
to abrasion and punctures, and a water-tight inner bladder. This
ensures the airbags maintain structural integrity under maximum
buoyancy loads while resisting saltwater corrosion, oil, and other
contaminants typical in port and ocean environments.
Precision Buoyancy Control
Multiple inflation ports with high-accuracy valves allow gradual
and adjustable buoyancy, enabling precise lifting of objects with
irregular shapes. Single or multi-point inflation ensures balance
and prevents tilting or rolling during ascent. Multiple airbags can
be used in combination for larger or unevenly weighted objects,
providing flexible and safe lifting options.
Rapid Deployment and Securing
Lightweight and compact, Marine Salvage Airbags are easy for divers
to transport and deploy underwater. Integrated attachment loops and
reinforced straps allow quick positioning at critical points. Even
in strong currents or limited visibility, installation and removal
can be performed efficiently, minimizing diver exposure time and
maximizing operational safety.
Redundant Safety Systems
Marine Salvage Airbags incorporate dual-layer bladders, pressure
relief valves, and monitoring ports, ensuring continued operation
even if one layer is damaged. Surface monitoring allows operators
to track buoyancy changes in real-time, preventing accidents and
providing high safety assurance during critical lifting operations.
Applications
Commercial Vessel Recovery
Ideal for sunken or partially submerged commercial vessels such as
fishing boats, cargo ships, and tugboats, Marine Salvage Airbags
can lift vessels safely in active port areas without interfering
with regular harbor traffic.
Shipyard and Dockside Maintenance
In shipyards or dry docks, these airbags can assist in hull
inspection, machinery installation, or localized underwater
repairs. Their flexibility and controlled buoyancy make them ideal
for lifting specific sections of large ships or supporting heavy
underwater equipment.
Oceanographic and Offshore Operations
Marine Salvage Airbags are effective for retrieving deep-sea
equipment, research instruments, or samples during oceanographic
surveys. Their precise inflation and robust construction ensure
safe recovery of sensitive payloads under varying depth and
pressure conditions.
Why Choose Hongruntong Marine
Proven Expertise in Marine Operations
With over 15 years of experience, Hongruntong Marine has
successfully completed numerous port and offshore salvage
operations worldwide. Our team understands the safety and
efficiency requirements for lifting operations, ensuring reliable
Marine Salvage Airbag performance in complex environments.
Custom RD Solutions
Our in-house engineers provide tailored solutions for specific
vessel types, weight classes, and environmental conditions.
Material selection, buoyancy design, and air valve configuration
are customized to optimize safety and operational effectiveness.
Technical Support and Project Assistance
We offer on-site support, consultation, and supervision for
international marine projects. Our experts assess site conditions,
advise on airbag deployment strategies, and monitor operations to
maximize efficiency and safety.
Commitment to Quality and Safety Standards
All Marine Salvage Airbags undergo rigorous testing, including
pressure, abrasion, and corrosion resistance. Our products meet
international marine safety standards, ensuring dependable
performance for high-risk underwater operations.
FAQ
1. What is the maximum load capacity of Marine Salvage Airbags?
Depending on the model, airbags can lift between 1 ton and 50+
tons. Multiple airbags can be combined for heavier loads.
2. Can Marine Salvage Airbags be used in deep-sea environments?
Yes, they are built from high-strength, corrosion-resistant
materials suitable for deep-sea operations.
3. How is buoyancy controlled underwater?
Buoyancy is adjusted via multiple inflation ports with precision
valves, allowing smooth, controlled lifting.
4. Are Marine Salvage Airbags safe for divers?
Yes, they feature redundant safety mechanisms, including dual-layer
bladders, pressure relief valves, and surface monitoring systems
for safe underwater operations.
5. Can they be customized for specific salvage projects?
Absolutely. Hongruntong Marine offers custom sizes, buoyancy
ratings, and materials to suit port, shipyard, or offshore project
requirements.
