The Airbag Launching Ship system is an innovative vessel launching solution designed to support the safe and controlled transfer of ships from land-based construction areas into the water by utilizing inflatable marine airbags as rolling support elements. This launching method has become an established engineering practice within the global shipbuilding industry because it minimizes dependence on permanent launching facilities while providing excellent operational flexibility for projects involving different vessel types and shipyard layouts.
Hongruntong Marine manufactures marine airbags using high-grade natural rubber integrated with multiple layers of high-strength synthetic tire cord reinforcement. The engineered composite structure provides excellent pressure-bearing capability, mechanical strength, and deformation recovery under continuous rolling loads. Precision vulcanization technology ensures strong adhesion between reinforcement layers and rubber compounds, resulting in stable structural performance, reliable airtightness, and consistent product quality throughout repeated industrial applications.
During launching operations, the airbags are arranged beneath the vessel according to carefully calculated engineering parameters, including hull geometry, displacement, center of gravity, and launching distance. Once inflated to the required working pressure, the airbags elevate the vessel from its support blocks and allow it to move progressively toward the water through controlled rolling motion.
An offshore engineering contractor in Abu Dhabi, United Arab Emirates, was responsible for fabricating several heavy-duty steel pontoons and offshore service barges for a coastal infrastructure development project. Following a comprehensive engineering review, Hongruntong Marine developed a customized marine airbag launching solution.
The first offshore service barge, weighing approximately 4,800 tons, was successfully transferred from the fabrication platform into the water using the marine airbag system. Throughout the launching operation, the airbags demonstrated stable rolling characteristics and maintained uniform support beneath the steel structure despite the heavy concentrated loads.
| Item | Description |
|---|---|
| Place of Origin | China |
| Brand Name | Hongruntong Marine |
| Material | Industrial Grade Natural Rubber |
| Diameter | 0.5m-3.0m, or as Request |
| Length | 1.0m-28.0m, or as Request |
| Working Pressure | 0.05-0.25 Mpa |
| Technics | High Pressure, Overall Winding, Explosion-Proof |
| Use | Ship Launching and Docking |
| Thickness | 5-13 ply |
| Standard | Conducted by ISO14409 and GB/T1590-2006 system. |
| Accessories | Q355/SS304/SS316, Pressure Gauge, Tee, Plug, Switch, Inflation Tube |
| Packaging | Inner-Plastic Bag; Outer-Standard Wooden Pallets. |
| Certificates | ABS, BV, KR, LR, GL, NK, RINA, DNV, RMRS |
| MOQ | 1 |
| OEM | Welcome |
| Diameter | Working Pressure | Working Height | Bearing Capacity KN/m | Bearing Capacity Ton/m |
|---|---|---|---|---|
| D=1.0m | 0.14Mpa | 0.6m | 87.96 | 8.98 |
| D=1.0m | 0.14Mpa | 0.5m | 109.96 | 11.22 |
| D=1.0m | 0.14Mpa | 0.4m | 131.95 | 13.46 |
| D=1.2m | 0.12Mpa | 0.7m | 94.25 | 9.62 |
| D=1.2m | 0.12Mpa | 0.6m | 113.10 | 11.54 |
| D=1.2m | 0.12Mpa | 0.5m | 131.95 | 13.46 |
| D=1.2m | 0.12Mpa | 0.4m | 150.80 | 15.39 |
| D=1.5m | 0.10Mpa | 0.9m | 94.25 | 9.62 |
| D=1.5m | 0.10Mpa | 0.8m | 109.96 | 11.22 |
| D=1.5m | 0.10Mpa | 0.7m | 125.66 | 12.82 |
| D=1.5m | 0.10Mpa | 0.6m | 141.37 | 14.43 |
| D=1.5m | 0.10Mpa | 0.5m | 157.08 | 16.03 |
| D=1.8m | 0.09Mpa | 1.1m | 98.96 | 10.10 |
| D=1.8m | 0.09Mpa | 1.0m | 113.10 | 11.54 |
| D=1.8m | 0.09Mpa | 0.9m | 127.33 | 12.98 |
| D=1.8m | 0.09Mpa | 0.8m | 141.37 | 14.43 |
| D=1.8m | 0.09Mpa | 0.7m | 155.51 | 15.87 |
| D=1.8m | 0.09Mpa | 0.6m | 169.65 | 17.31 |
| D=2.0m | 0.08Mpa | 1.2m | 100.53 | 10.26 |
| D=2.0m | 0.08Mpa | 1.1m | 113.10 | 11.54 |
| D=2.0m | 0.08Mpa | 1.0m | 125.66 | 12.82 |
| D=2.0m | 0.08Mpa | 0.9m | 138.23 | 14.11 |
| D=2.0m | 0.08Mpa | 0.8m | 150.80 | 15.39 |
| D=2.0m | 0.08Mpa | 0.7m | 163.36 | 16.67 |
| D=2.0m | 0.08Mpa | 0.6m | 175.93 | 17.95 |
* Other sizes can be produced following client's requirements.
Hongruntong Marine marine airbags are engineered to withstand substantial vessel loads through a combination of high-strength synthetic tire cord reinforcement and optimized rubber construction. The multilayer structural design effectively distributes internal pressure across the entire airbag body, allowing it to support large displacement vessels while maintaining dimensional stability.
During vessel launching, marine airbags experience continuous compression, expansion, and rolling deformation. The specially formulated rubber compound exhibits excellent elastic recovery characteristics, allowing the airbag to quickly regain its original shape after each loading cycle.
The rolling characteristics of the airbag play a critical role in launching safety. Hongruntong Marine airbags are manufactured with optimized surface geometry and balanced structural flexibility to provide smooth and predictable rolling behavior beneath the vessel hull.
Unlike permanent launching facilities that require substantial construction investment and ongoing maintenance, marine airbags represent a reusable engineering asset with comparatively low operating costs. Their durable construction supports repeated launching cycles, while the portable design allows equipment to be transferred between different shipyards or project sites.
The recommended working pressure is calculated according to vessel displacement, airbag dimensions, load distribution, and safety requirements. Operating within the specified pressure range is essential to maintain structural stability and ensure safe launching performance.
Yes. Marine airbags are suitable for launching offshore barges, floating docks, steel pontoons, caissons, bridge components, and other prefabricated marine structures, provided that the engineering calculations and airbag configuration are designed specifically for the project.
Marine airbags should be transported without sharp objects contacting the rubber surface. During storage, they should be kept clean, dry, and away from direct sunlight, chemical substances, and excessive heat. Proper storage helps preserve material properties and extends service life.
Operators should verify air pressure, valve condition, rubber surface integrity, reinforcement condition, and overall airtightness. The launching path should also be inspected to remove debris or sharp objects that could damage the airbags during rolling.
Yes. Hongruntong Marine can provide customized engineering recommendations, product specifications, airbag arrangement plans, pressure calculations, operational guidance, and technical documentation based on individual vessel characteristics and project requirements to support safe and efficient launching operations.