Heavy Duty Salvage Marine Rubber Airbag For Ship And Boat Launching Lifting

What were the first uses of airbags in the launching of ships?

The history of marine airbag ship launching dates back to 1981. Xiao Qinghe ship repair and building shipyard,located in Jinan city of Shangdong Province, launched a 60 DWT tank barge with airbag suspension on January 20, 1981.Seven airbags were deployed in that project. One was 2 meters in diameter and 6 meters long and used for elevating.The remaining six airbags were 0.8 meters x 6 meters long and acted as the rollers.The first intention of that trial launch was to develop a prompt, less landform limited ship launching method for warfare purposes.

Size Range:(airbag size depend on ship size)
Diameter(D):	From 0.6m to 2.8 m
Effective Length(EL):	From 5.0m to 25.0 m
Total Length(TL):	From 7.0m to 28.0 m
Standard Number of Layers:	Usually 3-10 layers

Guaranteed Working Pressure
Type	D=0.8M	D=1.0M	D=1.2M	D=1.5M	D=1.8M	D=2.0M
FL3 layers	0.13Mpa	0.10Mpa	0.09Mpa	0.07Mpa	0.06Mpa	0.05Mpa
FL4 layers	0.17Mpa	0.13Mpa	0.11Mpa	0.09Mpa	0.08Mpa	0.07Mpa
FL5 layers	0.21Mpa	0.17Mpa	0.14Mpa	0.11Mpa	0.09Mpa	0.08Mpa
FL6 layers	0.25Mpa	0.20Mpa	0.17Mpa	0.13Mpa	0.11Mpa	0.10Mpa
FL7 layers	0.29Mpa	0.23Mpa	0.20Mpa	0.15Mpa	0.13Mpa	0.12Mpa
FL8 layers	0.33Mpa	0.26Mpa	0.23Mpa	0.17Mpa	0.15Mpa	0.14Mpa
FL9 layers	0.37Mpa	0.29Mpa	0.26Mpa	0.19Mpa	0.17Mpa	0.16Mpa
FL10 layers	0.41Mpa	0.32Mpa	0.29Mpa	0.21Mpa	0.19Mpa	0.18Mpa

How has the technology advanced since then?

Over the past twenty years, the airbag ship launching system has made advancements in not only the airbag, but also the ship launching/landing technology. The first generation airbags used a rubber dipped canvas as a reinforcement layer to form the air chamber trunk. Two cone-shaped molds were then used to make the ends and everything was stuck together. With today’s airbags, the whole-enlacing-technology used for manufacturing is done together. Rubber dipped synthetic-tyre-cords are used as the reinforcement layers with the trunk and two cone-shaped ends made at the same time.Everything is then-laced together, so the airbag doesn’t have any joints. Due to the development of rubber chemistry, the performance of the rubber employed in the latest airbags is highly enhanced and about 15 times that of the first generation bag with the same specifications. The launching and landing technology has also developed. In the beginning, only small and flat bottom ships located on a fabricated slope could be launched with airbags. Now this technology is more flexible and less limited by the ship and landform. Now any type of ship with a DWT below 55,000 and in a place with enough launching space can be launched using airbags. The launching slope even can be sloped upward. It has really developed into a cutting edge technology for launching ships, and especially useful for some marine emergencies.

Application:

1.For ship upgrading, conversion or new/repair launching (Ship launching airbags)
2.Marine airbag for salvaging sunken ship or heavy immersed steel structure
3.For hoisting and transporting heavy goods up to 10,000 tonnes structure on land
4.For floating use purpose as improve the draft.
5.Pneumatic rubber core for architecture engineering Container for storing and transporting gas and corrosive chemical liquid and pure water for voyage

Factory established in 1992, Qingdao Florescence Marine Supply Co., Ltd (Subsidiary of Qingdao Florescence Co., Ltd) specializes in manufacturing pneumatic rubber fenders, foam fenders, various ship dock rubber fenders, and ship launching & salvage rubber airbags.

FLORESCENCE products are designed, manufactured, and tested by per ISO 9001:2015 requirements. And every unit is robustly built to the stringent requirements of ship surveyors such as CCS, BV, RS, ABS, LR, etc.

We are the supplier of many navy, such as Bangladesh Navy, France Navy, Greece Navy, Thailand Navy, Italy Navy, Philippines Navy, etc.

FLORESCENCE considers our clients as a part of the team, treating them as partners. We are always together with them on each step of the way, from finding the solutions of fender using and ship launching to the manufacturing and installation operations on site. Our rich experience has earned us a reputation as a dependable partner in many ports and shipyards around the world.