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Quick Details

  • Place of Origin: Shandong, China (Mainland)
  • Brand Name: Florescence
  • Model Number: D1.8m*L18m
  • Part: Manometer, three-limb tube, valve, hose joint
  • Model size: D1.8m*L18m
  • Material: Natural rubber (54%) and synthetic tire-cord layers
  • Number of layers: 4-10 layers
  • Available diameter: From 0.8m to 2.0m
  • Effective length: From 5.0m to 22.0m
  • Accessories: Manometer, valve, three-limb tube, hose joint, etc.
  • Standard: ISO 14409
  • Certification: CCS BV GL, etc.
  • Service life: About 10 years
  • Main use: For ship launching, moving, lifting and salvage

Packaging & Delivery

Packaging Details Folded by rope without air or according to customers' demands
Delivery Time Within 20 days after receiving 30% advanced payment

→What are specification of ship rubber airbag, ship launching airbag?


We could manufacture ship rubber airbag diameter from 0.8m up to 2.0m, length from 5.0m up to 22.0m, and layers from 4 to 10 layers.


If you are not sure about the airbag size needed, could tell me where do you use them, for 

ship launching, landing, marine salvage or caisson lifting? And the information( length, width, 

weight) of your target ship. We will recommend you a most suitable airbag size.



→Florescence ship rubber airbags construction and material


Construction:  An airbag is to be constructed of an outer rubber layer, one or more synthetic-tyre-cord layers, and an inner rubber layer. The arrangement of synthetic-tyre-cord reinforcement layers is shown in the picture below, all materials shall be vulcanized firmly.


Material: natural rubber and synthetic-tyre-cord layer



→Florescence ship rubber ship launching airbags launching solution


<1>Launching type


Based on the ship shapes, the ship may be launched,using air bags,by either end launching 

type or side launching type.


<2> End launching type


<2.1> There are three ways to arrange air bags when using the end launching type.They are

(1) linear arrangement (2) staggered arrangement and (3) two lines arrangement. As for which 

arrangement to use, it needs to depend on the ship’s width and the length of the air bags.

<2.2>  When the ship’s width is not greater than the effective length of the air bags, the linear 

arrangement shall be selected.

<2.3> When the ship’s width is greater than effective length of an air bag and less than the 

effective length of two air bags, then staggered arrangement shall be selected.

<2.4>  When the ship’s width is greater than the combined effective length of two air bags, or 

for special ship such as catamaran HSC or split hopper barge,the two lines arrangement shall 

be selected.The distance between the near ends of two air bags is greater than 0.2m.


<3> Side launching type


<3.1> For small flat-botton ship, side launching method may be utilized. In this case, the air bags of same specification,same diameter and same length shall be used.

<3.2> The air bags shall be divided into two groups, and be evenly arranged under the low and 

the stern ends of the ship.The distance between two air bags shall be made equal.The distance 

between the ends of two groups shall be greater than 1m but not greater than 10 percent of the 

ship’s length.

<3.3> The hauling rope shall be fixed at the middle of the two air bag groups and be 

perpendicular to the hull of the ship.



→How to choose ship rubber airbag, floating pontoon size?


Airbag Diameter: Usually choose diameter 1.5m, when pier is a little higher, could choose 

1.8m or 2.0m. For small boat, could choose 1.0m or 1.2m.


Effective Length: means the cylindrical airbag body, not including terminal iron.

(1) boat width<=20m, theoretically effective length = boat width.

(2) boat width>20m, usually choose two-lines arrangement or staggered arrangement.


Tire-cord Layers: Normally choose 4, 6 or 8 layers. It's up to your boat tonnage.


The interval between each two airbags are no more than 6 meters, and the specific interval is 

determined by the airbag diameter as the following chart


Airbag Diameter 






Minimum Space









If you are not sure about the airbag size needed, could tell me where do you use them, for ship 

launching, landing, marine salvage or caisson lifting? And the information( length, width, weight)of your target ship. We will recommend you a most suitable airbag size.



 →Florescence pneumatic ship rubber airbag, floating pontoon loading pictrures





For more information, please feel free to contact me. We will reply you within 24 hours.




Qingdao Florescence Rubber Product Co.,Ltd --Jason


Whatsapp:+86 18205321757






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