Technical articles of marine airbags and their applications
Airbag Ship launching can be adapted to launching of most ships, from flat bottom barges to V hull fishing boats , from hundreds tons tugboat to ten-thousand tons bulk carriers, they can rely on airbags for launching. Airbag ship launching has strong adaptability to terrain, and large tolerance for launch slope, ground bearing capacity, water […]
Airbag ship launching technology originated in China. Due to its economy, convenience, reliability and other advantages, it is warmly welcomed by ship building and repair shipyards all over the world. The tonnage of ships that can be launched with marine airbags has also grown from a few hundred tons at the earliest to tens of […]
Ten tips can remarkably increase safety factors of the launching projects is a summary of Eversafe Marine hundreds vessels’ launching experience. They can be used as a reference for safety checking too. “Good preparation leads to success”- make proper preparation for a ship launching with marine airbags is vital for the success and safety of […]
This ISO 14409 specifies the terms and definitions, classification, materials and dimensions, test items and methods for air bags to be used for launching a vessel. It also specifies issues such as marking, documentation, packaging, transport, storage and so on. This International Standard is intended for designing, manufacturing, testing and accepting air bags that are […]
The main principle of airbag ship launching is changing the force of sliding friction into rolling friction. The rolling resistance coefficients are important for calculation of ship launching with airbags. The mechanism of the resistance force during airbag rolling, is fundamentally different from the mechanism of rolling friction which occurs during rolling of the solid […]
We were told ship launching airbags can be used for many times with 5-8 years lifespan. But what is the criteria to judge one launching bag good or not good for using, when that bags may be 3 or 5 years old and got scars after several time using. And how can we achieve the […]
An old story but very successful application of using Evergreen salvage airbags to re float sunken ship is presented for people may be interested. Most contents and pictures are from Maud Returns Home The Maud, a Norwegian ice-faring ship built for the explorer Roald Amundsen, had been sitting in shallow water off the coast of northern […]
This article is a guidelines of how to repair big cuts on ship launching airbags, include preparation of repair tools and repair material, repair procedure and how to evaluate the repair result. Repair big cuts is quite different with repair holes on marine airbags. Here the big cut refers to thorough cut more than 10 […]
Marine Structures are becoming bigger and bigger To carter to big marine constructions, the precast structures such as caissons, culverts, are becoming bigger and bigger in both weights and size. From 1990 years, the unit weight of concrete caissons for gravity wharf construction reach 1000 tonnes. Demands for transport heavy structures are increasing To handle […]
Airbag Burst testing is used to determine the absolute maximum pressure at which ship launching airbags will “burst” or fail catastrophically. It is the ultimate test method for the Ship Launching airbags’performance and safety. Airbag burst test is invaluable for airbag design engineers to assist with material selection, wall thickness, or component geometry, structure optimization […]
Here airbag means marine airbags not the safety airbags deployed on Vehicles. Marine airbags are also well known as ship launching airbags or docking airbags, used in maritime industry. Those rubber airbags are strong and durable, have more than 6 years lifespan. But they are made of rubber and nylon cords, they can be punctured […]
