Ship Launching Process by Evergreen Marine Air Bags

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Ship Launching Process by Evergreen Marine Air Bags

This process can be used for the launching operation of cargo vessel,chemical vessel,AHTS,floating dock,and so on,most of vessels under 18,000 tons(lightweight).

Preparation

1.       According to the calculation,prepared enough air bags,towing winches,air compressor and other instruments needed.

Before operation,marine air bags should be inflated working pressure to test its safety and airtightness.If there is any problem,marine air bags should be fixed before use.

2.       Clear all the obstacles and sharp iron nail from launch ramp.Check vessel bottom to ensure no welding scar which may puncture marine air bags.

Lifting

5.       Insert the marine air bags between support blocks and inflate them to lift vessel.When vessel is lifted,people can take out support blocks under the ship.

A.     For the light weight ship,small amount of air bags can fully lift the ship at one time then it is easy to remove the blocks and insert left air bags for launch.

B.      For the heavy ship,it will be lifted by marine air bags step by step.First people need to find the best point for marine air bag lifting.The best position means where air bags can get big contact area with vessel bottom and also far away from vessel’s gravity center.People may refer to the right drawing to find lifting condition need to be satisfied.

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Certificates for airbags:

Achievements for ship launching using marine airbags