Marine airbag has become an important auxiliary tool for ship industry, especially used in the ship's launchingand lifting,the airbag has an irreplaceable role. With th airbag, it can greatly cutdown the limitation of the ship and overcome the disadvantages of the traditional slipway launching.


When we choose a right marine airbag size, we need to consider its diameter and the effective length as bellow;

How to Choose the diameter


The diameter of marine airbags is determined by the height of block beams which are used to support the items you want to move. For example, you can choose marine airbags with diameters no less than 1.5m when the support block is 1m in height.

For marine salvage airbags, the most important thing you need to concern is buoyancy, which determine the diameter and length of rubber body. (Note: If marine salvage airbags are going to be used in deep water, the pressure of airbag should be taken into consideration to make sure that the rubber body can withstand high hydraulic pressure.)


For heavy lifting airbags, the diameter is determined by component plies. Normally, mid-pressure airbags are suitable to lift light items such as vessels whose launch weight is below 2000 tons. High pressure airbags are designed for heavy duty work. Normally, airbags with 6 piles are suitable for almost all types of lifting work, but for some rugged applications, airbags with 7 or 8 piles are needed. For instance, when lifting heavy structures with limited contact surface, airbags with higher pressure and more piles are the best choice for providing higher safety.



How to Choose the effective length.

For single row arrangement, the length of them should no less than the maximum width of the item you want to move.

For two rows of airbags, the total length of marine airbags can be estimated to be the effective length plus the diameter of marine airbags. For example, if the effective length of airbags is 14m and the diameter is 1.3m, then its total length is 15.3m.

Welcome to contact China Century Marine Equipment for marine airbags cooperation.