1.5M x 15M BV Certificated Airtight Marine Rubber Ship Launching
Marine rubber ship airbags are widely used for ship launching and
docking in shipyards, specially medium and small shipyards
alongside rivers and seasides in Asian and American countries.
Marine airbags are often called ship launching airbags that
indicate the most popular application of these heavy duty airbags
is for ship launching. It is estimated that more than 80 percent
new built ships who’s DWT below 60,000 are launched by marine
Launching with marine airbags is flexible. Any flat ground with a
little declining angle can be taken as a slip way. Airbags can
sucessfully launch a ship even on a bank 1 or 2 meters over water
Construction and Structure of Marine Rubber Ship Launching Airbags
Marine rubber airbag typically has a body of cylindrical shape and
two conical heads, one at each end. At each head end, there is a
metal bushing as a mouth for air inflation and the plug with a
Please refer to the drawing of a typical marine airbag and its
accessories below to know the structure and accessories.
How to select marine rubber airbags for ship launching and docking
Ship launching airbags can be made into various sizes and layers
accoding to the ship size and weight and the launching or docking
The effective length should be same as the ship breadth, or 1 meter
shorter than the breath.
We can make airbags in length from 5m to 24m.
Select diameter based on the ship size and work requirement. Select
bigger airbags for large ships, but smaller airbags for small
boats. In case the ships need cleaning or repairing bottom, choose
bigger airbags so that workers can work in a more comfortable
posture under the ship. Diameter of 1.5m, 1.8m, 2m or 2.5m are all
suitable and available for large ships.
The number of layers:
The more layers the airbag has, the bigger bearing capacity it has.
To lift a ship to a certain height, enough airbags with enough
layers are needed. Generally speaking, airbags with 6 layers are
enough for most engineering works. Only in some rigorous situation,
airbags will need 7-8 layers to enhance its performance. For
example, if people use airbags to lift heavy caisson but their
contact area is limited, and then airbags will need higher pressure
and more plies to ensure the safety.
Good selection of marine airbags is vital for the success of marine
projects. Get basic knowledge of marine airbags selection then
consult with manufacturers can help people complete projects in
Below is a chart for the bearing capacity of several sizes
|Model||Dia||Effective Length||Overall Length||Cord Layer||Rubber Plate||Thickness||Working Pressure||Bursting Pressure||Lifting Height||Bearing Capacity|
In case you are not sure of the suitable sizes and sufficient
layers of a launching project or ships, you are welcome to consult
us for information. You need provide us with following information:
Ship size: breadth (width) and Length
Ship weight: weight of vessel without cargo is better
Lifting height: the maximum height to lift the ship from the ground
The slipway condition: the declining angel, the ground condition
Please do not hesitate to send us any inquiry here, which will be
answered as soon as possible.