Marine Rubber Airbags are heavy-duty inflatable devices used primarily for launching, lifting, and transporting ships and marine structures. Unlike fixed systems such as dry docks or mechanical slipways, these airbags provide a flexible, cost-effective, and mobile solution for ship launching and marine engineering projects. They are manufactured from multi-layered, high-strength rubber and synthetic cord materials, giving them excellent elasticity, high pressure resistance, and long service life.
Each airbag is designed to withstand repeated inflation and deflation cycles while maintaining its structural integrity under heavy loads. Their cylindrical shape and robust construction allow them to distribute weight evenly, reduce friction with the hull, and provide shock absorption during launching or lifting. Marine Rubber Airbags can be used in a variety of environments, including shipyards, ports, offshore platforms, and emergency operations.
In 2023, a shipyard in Southeast Asia successfully launched a 5,000-ton cargo vessel using 20 Marine Rubber Airbags. Traditional launching methods would have required costly slipway construction and weeks of preparation. By utilizing the airbags, the shipyard was able to complete the launch in just three days. Workers positioned the inflated airbags under the vessel hull, and with careful coordination, the ship was smoothly rolled into the water without damage. The operation saved more than 30% of the total project cost and reduced manpower requirements by nearly half. This case demonstrates the reliability, efficiency, and cost-effectiveness of Marine Rubber Airbags for large-scale ship launching operations.
Marine Rubber Airbags are also widely used for heavy lifting, underwater support, and emergency salvage operations, making them a versatile tool for shipyards, marine contractors, and rescue teams worldwide.
| Product Name | Marine Rubber Airbags |
| Material | 100% High Tensile NR |
| Dimensions | Diameter 0.5m - 3.0m, Length 3.0m - 28.0m, or As Request |
| Working Pressure | 0.05-0.25MPA |
| Technology | Overall Winding, High Pressure, Explosion-proof |
| Metal Parts | Q355 / SS304 / SS316 |
| Standard | ISO14409:2011 |
| Service Life | 20 Years |
| Warranty | 36 Months |
| 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=1.2m | 0.12Mpa | 0.7m | 94.25 | 9.62 |
| D=1.5m | 0.10Mpa | 0.9m | 94.25 | 9.62 |
| D=1.8m | 0.09Mpa | 1.1m | 98.96 | 10.10 |
| D=2.0m | 0.08Mpa | 1.2m | 100.53 | 10.26 |
* Other size can be provided follow client's requirements.
Marine Rubber Airbags come in various diameters (0.8m-2.5m) and lengths (5m-24m) with working pressures from 0.05-0.25MPa. Single airbags can handle loads from small boats to large vessels exceeding 20,000 tons when used in groups.
They can be inflated using standard air compressors or portable pumps. For ship launching, airbags are positioned under the hull, gradually inflated to lift the vessel, and then rolled to the water's edge for launch.
After use, rinse the airbags with fresh water, inspect for damage, and store them deflated in a cool, dry area. With routine inspections and minor repairs using provided kits, service life can exceed 8-12 years.
