The historyof changlin marine airbags:

Air bag launching was developed based ontraditional slideway launching mode and invented by Chinese in theearly 1980s. It is like flexible cushion to bring the shipfree pitching during the launching course,not only thepressure under hull bottom is moderated due to larger flexiblecontact area, but also the hull structure and surfacepaint are protected against damage.Through more than 30 yearsdevelopment and improvement, changlin flexible air bags are widelyused to ship launching ship,  transportation oflarge size constrcution modules, salvage sunken ships,  as acontainer for storing liquid and gas,as a patoon to erectfloating bridges& pipelines and so on....At present, changlinairbags can launching a ship up to 100,000DWT.

Merits ofchanglin airbags:Comparing traditional slideway launch, it hasfollowing merits.

A.Saving the investment of shipyardconstruction

The construction of launching facilities, liketraditional slideway and its underwater engineering, are veryexpensive. If using air-bag launch, only a simple launching slipway shall be built without complex underwater engineering. So airbag launch saves the investment of construction.

B.Simple operation,saving labor and workhours

Air-bag launch avoids lots of trouble, such asthe complex process of cleaning away the mucky soil on the surfaceof the slideway, covering or smearing with lubricating grease,setting slide plates and fixing the hull. The material and workinghours are reduced.

Usually the preparation for air-bag launch maybefinished within one or two days. The operation is simple. Air bagscan be reused. Ship building cost can be reduced by air-baglaunch.

C.Environmental friendly

In tradational slideway launch, some distanceslideway extends into underwater, which affects the floodembankment and navigation environment. Furthermore, lubricatinggrease mass causes water contamination.

Air-bag launch shortens the length of ramp waylength under water. There is no emission intowater.