Marine Airbags for Ship Launching/Ship Pulling/Salvage
Marine Airbags for Ship Launching/Ship Pulling/Salvage
Ship launching using marine airbags is a very popular vessel launching method. It overcomes the shortcomings of the fixed launching track, which limits the productive capability of the small and medium sized shipyards. Now it has become a Flexible Launching Technology, having the merits of time and labor saving, flexibility, reliability and safety in operation and comprehensive economic benefits etc.
- Saving the investment of shipyard construction
- Simple operation, saving of labor and work hours
- Environment friendly
After years of practice and accumulation of experience, we have developed the technology from launching only 1,000 DWT ships to current 55,000 DWT ships and we will achieve more. And now this technology has become a flexible, promising, secure and mature technology. Besides that, these airbags are widely used in slipping of ships and boats of all sizes.
How It Works Using Marine Airbags for Ship Launching and Pulling
1. Place airbags under the vessel between the supporting blocks and inflate them to lift the vessel. And then remove the blocks under the vessel after lifted.
For the light weight vessel, only several pieces airbags can fully lift the vessel at one time and then remove the blocks and place more airbags for launching.
For the big weight vessel, it will be lifted step by step. First put the airbags under the vessel. Second: Pump part airbags, if vessel is lifted from blocks then remove blocks. The sequence of block removal is middle first then sides. Third: Adjust inflated airbags’ position to be accurate since during lifting some airbags’ positions are hampered by blocks. Fourth: Pump more airbags to continue release blocks and remove them. Fifth: Repeat pumping and remove until all blocks are removed. During this process some blocks may be difficult to be released, people may pump airbags’ pressure to be high pressure. If high pressure still doesn’t work, people may deflate some groups of airbags and underlay them. Sixth: When all blocks are removed adjust airbags’ position. Seventh: Adjust pressures of airbags.
2. Adjust airbags’ pressures. Check all airbags’ working height, especially airbags at bow, if working heights are less than 0.3 m then people should adjust the airbag’s pressure to increase its working height.
3. Block launching area and prepare good communication for the launch command.
4. When water level reach desired level, cut off pulling ropes and release the vessel. If the launching water area is limited, people may use winch to release the vessel slowly into the water.
5. Reclaim airbags after launch.
Do not be misled by suppliers who supply old re-used rubber, weak cords with lower number of true layers and more. Top quality Marine Airbags can be used up to 8 years, and in the long run, actually helps you save more!
Why Choose JIER Marine Airbags
- 3-strand cords with great tensile strength
- High quality rubber raw material
- Superb quality and above average thickness for rubber layers
- Strictly comply to the standard of ISO 14409:2001 (E) Ships and marine technology – Ship launching air bags
Click Below for More Info of JIER Marine Airbags
Marine Airbag Specification
Marine Airbag Construction
Ship Launching/Pulling Airbags, basic body are consisted of our rubber layers, synthetic-cord-reinforced rubber layers, are kind of a cylindrical airbags with hemispherical heads at the both ends. All of these are vulcanized together, and then compress air inside to enable it to roll. more…
Marine Airbag Application
Marine Airbag Repair and Maintenance
Marine airbags can be used repeatedly; the correct using method and reasonable storage could extend the using life of them.
Top Notice for the Usage of Marine Airbags
☆ Control the pneumatic pressure strictly, do not exceed the upper limit value of work pressure in any case.
☆ The surface of marine airbags should not be contacted with hard & sharp objects like sharp metal plates, big stones etc. to avoid unnecessary puncturing damage.
Click Below to Learn More Guidelines of Using Marine Airbags
Ship launching using marine rubber airbags is a very popular launching method, particularly in Asia. Besides, many shipyards choose airbags for ship repairing and maintenance. The use of such marine rubber airbags may seem to be quite simple and straightforward, yet there are still some important principles that need to be followed strictly to ensure the success of launching work… …
Just like energy calculations, no matter how bad some fenders may be, they seem to give adequate enough service for the marketplace. However, the long-term quality of mass-produced fenders looks destined not to improve. Good design can significantly increase the percentage of potential useful life that marine fenders actually achieve… …
This International Standard specifies the terms and definitions, classification, materials and dimensions, test items and methods for air bags to be used for launching a vessel. It also specifies issues such as marking, documentation, packaging, transport, storage and so on… …
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