Durable Outer Skin Design
Anti-Twisting Design
Safe and Hassle-Free Operation
Character of Evergreen ship drydocking airbags
Durable Outer Skin Design
Evergreen ship hauling airbags are constructed with reinforced outer layers to resist damage from sharp marine organisms attached to the hull. For projects requiring extra protection, we can provide airbags with anti-cut steel wire mesh upon request.
Anti-Twisting Design
For airbags longer than 15 meters used in long-distance rolling operations, an anti-twisting design ensures safety and stability throughout the process.
Safe and Hassle-Free Operation
Evergreen ship hauling airbags can remain inflated and functional underwater for up to two weeks without re-inflation, significantly reducing labor intensity and improving efficiency.
Applications
hauling out one 200 tons barge with ship drydocking airbags
Picking up one retired submarine with ship drydocking airbags
3200 T RO-RO cargo ship dry docking with pneumatic rollers
Versatile Use & Capacity
Suitable for both flat-bottom and V-hull vessels, with a proven record of hauling ships weighing up to 7,000 tons. After vessel repairs are completed, ship hauling airbags can also be used to safely launch ships back into the water.
Flexible Deployment
For lighter vessels, natural slipways or simple reinforced ramps are sufficient for hauling operations, making airbags especially useful in remote areas or locations lacking permanent shipyard infrastructure.
Efficiency & Cost Savings
Compared with traditional slipway ship hauling methods, hauling ships with airbags is not restricted by vessel width, offering greater flexibility, faster setup, and significant savings in site construction costs and time.
Usage Guidelines
Even though the outer skin of ship hauling airbags is reinforced, avoid direct contact with marine growth, sharp metal edges, or other abrasive objects under the hull to reduce the risk of damage.
During ship hauling operations, the maximum allowable static lifting pressure can be up to twice the working pressure, but always confirm that this pressure complies with the vessel’s structural strength and bending moment requirements.
Inflate marine airbags slowly, especially the first group positioned under the bow.
After use, wash marine airbags with clean fresh water, dry them completely, and store them properly.
If ship hauling airbags are cut or abraded, perform timely repairs before the next operation.
Advantages of Evergreen Ship Hauling Airbags
Wide Applicability: Works with various vessel types and sizes.
Cost-Effective: Reduces or eliminates the need for permanent slipway construction.
Flexible Deployment: Easily set up in remote or temporary sites.
Environmentally Friendly: Minimal seabed disturbance compared to traditional methods.
Technical Specifications
| Diameter(m) | Maximum Allowed Pressure (MPa) | Maximum Lifting Force at 50% Compressed (Ton/m) |
| 1 | 3.5 | 27.4 |
| 1.5 | 2 | 23.5 |
| 1.8 | 1.8 | 25.4 |
| 2 | 1.5 | 23.5 |
Detailed performance of docking airbags are available on request.
Case Studies
7000 T FLOATING DOCK HAULED TO LAND WITH DRYDOCKING AIRBAGS
7000 T Floating dock hauled to land with drydocking airbags
Light weight 7000 T Floating dock hauled to land with drydocking airbags
How to Choose the Right Ship Hauling Airbag
Our technical team can provide customized calculations and layout plans to ensure safe and efficient hauling operations.
When selecting hauling airbags, consider:
- Vessel type and weight
- Slipway slope and surface conditions
- Operational distance from water to shore
- Frequency of use and storage conditions