Inflatable Marine Air Bags Launching And Docking Boats
What is Airbag?
Our Inflatable Marine Airbags have an innovative inflatable
structure for easy inflation and deflation, being highly versatile.
Suitable for ship launching, docking, and undocking, they adapt to
various marine applications and provide necessary support.
Key selling points: can withstand heavy weights for ship safety,
simple inflation and deflation for convenience, made of
high-strength materials for puncture and wear resistance.
Operate within a pressure range of 0.2-0.4Mpa for safety and
stability. Cylindrical shape for optimal performance and support
for diverse vessel sizes. Choose our airbags for better quality,
performance, and safety in marine operations. Upgrade with the best
in the industry.
What can Airbag be used?
Lay uninflated cylindrical airbags at the bottom of the boat.
Inflate to lift the boat, remove obstacles below, then release some
air bags at the back and push the boat a bit. This is how a ship is
launched. Ship launching in the shipbuilding industry is complex.
Inland and coastal ships are launched by rail sliding or air bag
rolling. Rail sliding needs a slipway or dock and is only for large
shipyards due to high cost.
Marine air bags are popular with small and medium shipyards for low
investment and wide application. They are widely used for ship
launching and docking in Asian and American countries. More than
80% of new ships under 60,000 DWT are launched by marine airbags.
Launching with air balloons is flexible. Any flat ground with a
slight decline can be a slipway. Airbags can launch a ship even on
a bank 1 or 2 meters above water level.
Marine Airbags Material and Structure
Luhang marine airbag for ship launching has a designed structure
with five functional rubber membranes. It's made by patented whole
enlacing technology with no joints on the cylindrical body and
hemispherical heads.
- Outer and inner rubber layer: The outer layer protects underlying
layers from abrasion and external forces. It has sufficient tensile
and tearing strength.
- Synthetic-tire-cord layer for reinforcement: Reinforcement cord
layers made of synthetic-tire-cord are arranged at ideal angles to
hold internal pressure and distribute stress evenly for strong
reinforcement.
- End fittings: Include air tightness swivel and safety air inlet.
The airbag has a cylindrical body and two conical heads with metal
bushings and plugs for air inflation.
Refer to the drawing below for structure and accessories.
Why Choose us and Marine Airbags?
We are a leading professional manufacturer of marine airbags with
over 20 years of experience. With mature technology, experienced
workers and strict quality control, we guarantee high-quality
airbags, especially in air tightness. Here's the production flow.
We are a credible company making marine air bags with optimized
rubber material, various sizes and layers. ISO certified with many
product patents. Airbags are inspected and approved by third
parties like BV, SGS, V-Trust, etc., with excellent high pressure
and airtightness performance.
Size and Performance of our Marine Airbag
Ship launching airbags can be customized in various sizes and
layers based on ship size, weight, and launching or docking
conditions.
- Effective length: Ideally, it should be equal to the ship's
breadth or 1 meter shorter. We can produce airbags ranging from 5m
to 24m in length.
- Diameter: Choose diameter according to ship size and work
requirements. Larger ships need bigger airbags, while small boats
can use smaller ones. For ship bottom cleaning or repair, bigger
airbags allow workers to work more comfortably. Diameters of 1.5m,
1.8m, 2m, or 2.5m are suitable for large ships.
- Number of layers: More layers mean greater bearing capacity. To
lift a ship to a certain height, sufficient airbags with enough
layers are required. Generally, 6-layer airbags are sufficient for
most projects. In some demanding situations, 7-8 layers may be
needed for enhanced performance, such as when lifting heavy
caissons with limited contact area, requiring higher pressure and
more plies for safety.
Proper selection of marine airbags is crucial for the success of
marine projects. Gaining basic knowledge of airbag selection and
consulting with manufacturers can help complete projects in the
shortest time.
Here is a chart for the bearing capacity of several sizes.
| Size | Diameter | 1.0m, 1.2m, 1.5m, 1.8m, 2.0m, 2.2m, 2.5m, 2.8m, 3.0m |
| Effective Length | 6m, 10m, 12m, 15m, 18m, 20m, 22m, 24m, etc |
| Layers | | 4 layers, 5 layers, 6 layers, 8 layers, 10 layers, 12 layers |
| Model | Dia | Effective Length | Overall Length | Cord Layer | Rubber Plate | Thickness | Working Pressure | Bursting Pressure | Lifting Height | Bearing Capacity |
| M | M | M | Layer | Layer | mm | MPa | MPa | M | Ton/meter | Ton/airbag |
| LH-6 | 1.2 | 12 | 14 | 6 | 1 | 7.2 | 0.17 | 0.75 | 0.90 | 7.85 | 94.20 |
| 1.00 | 5.23 | 62.76 |
| 1.10 | 2.62 | 31.44 |
| LH-7 | 1.5 | 15 | 17 | 7 | 1 | 8.2 | 0.16 | 0.70 | 1.00 | 12.21 | 183.15 |
| 1.10 | 9.77 | 146.55 |
| 1.20 | 7.33 | 109.95 |
| 1.30 | 4.89 | 73.35 |
| LH-8 | 1.8 | 18 | 20.5 | 8 | 1 | 9.2 | 0.15 | 0.67 | 1.20 | 13.96 | 251.28 |
| 1.30 | 11.63 | 15.12 |
| 1.40 | 9.31 | 167.58 |
| 1.50 | 6.98 | 125.64 |
| 1.60 | 4.65 | 83.70 |
| LH-10 | 2.0 | 20 | 23 | 10 | 1 | 11.2 | 0.17 | 0.75 | 1.30 | 18.32 | 366.40 |
| 1.40 | 15.70 | 21.98 |
| 1.50 | 13.09 | 261.80 |
| 1.60 | 10.47 | 209.40 |
| 1.70 | 7.85 | 157.00 |
Please do not hesitate to contact us for any inquiry.
. In case you are not sure of the suitable sizes and sufficient
layers of a launching project or ships, you are welcome to consult
us for information. You need provide us with following information:
-Ship size: breadth (width) and Length
-Ship weight: weight of vessel without cargo is better
-Lifting height: the maximum height to lift the ship from the
ground
-The slipway condition: the declining angel, the ground condition
etc
