Marine Air Bags A Most Unusual (and effective?) Ship Launching Technique | BlogMercante - Navegar é preciso
CFAQ Ciaga/Ciaba Construção Naval Convés Destaques Documentação Emprego Entrevistas Filipino Fotos Humor Jurídico Lá Fora Máquinas Navegação Notícias de terra Pesca Petróleo e Gás Praticagem PREPOM Rádio Cipó Segurança Sindmar Sindmestres Tecnologia Vapozeiro Brasileiro
To educate everyone on the use of air bags as a cost effective technique used for ship launching, we reached out to Song Tao of Qingdao Evergreen Shipping Supplies Co.,Ltd . Let s here what he has to say. What were the first uses of air bags in the launching uasc online of ships?
The history of marine air bag ship launching dates back to 1981. Xiao Qinghe ship repair and building shipyard, located in Jinan city of Shangdong Province, uasc online launched a 60 DWT tank barge with air bag suspension on January 20, 1981. Seven air bags were employed in that project. One was 2 meters in diameter uasc online and 6 meters long and used for elevating. The remaining six air bags were 0.8 meters x 6 meters long and acted as the rollers. The initial intention of that trial launch was to develop a prompt, less landform limited ship launching method for warfare purposes.
Over the past twenty years, the airbag ship launching system has made advancements in not only the air bag, but also the ship launching/landing technology. The first generation air bags used a rubber dipped canvas as a reinforcement layer to form the air chamber trunk. Two cone-shaped molds were then used to make the ends and everything was stuck together.
With today s air bags, the whole-enlacing-technology used for manufacturing is done together. Rubber dipped synthetic-tyre-cords are used as the reinforcement layers with the trunk and two cone-shaped ends made at the same time. Everything is enlaced together, so the whole air bag doesn t have any joints. Due to the development of rubber chemistry, the performance of the rubber employed uasc online in the latest air bags is highly enhanced and about 15 times of the first generation bag with the same specifications. uasc online
Regarding the launching/landing uasc online technology, it has also developed. In the beginning, only small and flat bottom ships located uasc online on a fabricated slope could be launched with air bags. Now this technology is more flexible and less limited by the ship and landform. Now any type of ship with a DWT below 55,000 and in a place with enough launching space can be launched using air bags. The launching slope even can be aclinic. It has really developed into a cutting edge technology for launching ships, and especially useful for some marine emergencies.
The main use of Yokohama fenders and Evergreen air bags are definitely different. It is well known that Yokohoma fenders offer an effective fender system providing a soft and stable berthing condition to ships. Evergreen air bags are widely used for ship launching, landing, heavy transport and air lifting. Due to the special use, structures of Evergreen air bags are optimized for safety and built for heavy duty use. The surface layers are enhanced for anti-abrasion and are pierce resistant. Even if they are somewhat wounded, Evergreen air bags can still work safely until repaired. The length of air bags are usually more than 10 meters and two cone-shaped ends make them look like huge sausages. Also, Evergreen air bags never use tires and shackles.
An air bag ship launching system does not need the traditional fabricated slipways so it saves time, investment, land, etc. Air bags need no extra maintenance and after use they can be cleaned and folded in the corner to wait for another mission. It is easy to find that air bags elasticity can give more protection to the launched ship. A remarkable character of air bags is that the working height can be changed to redirect the ship or object being launched by adjusting the inner air pressure. For this character uasc online it is peerless compared to traditional ship launching techniques.
Evergreen air bags are not only used for ships, floating docks and caisson launching uasc online but they are also cutting edge for ship landing, heavy transport, uasc online marine salvage, etc. It is a versatile tool for many marine applications.
The most challenging mission we ever participated in was the ancient ship named Nanhai No.1 salvage project. The project was called the most complicated and expensive salvage project in China s history. (photos of salvage project below) uasc online
It had been revised 6 times and been demonstrated 4 times during the preparing 4 years. In June 2006, the top 22 experts uasc online were collected to demonstrate the latest project which finally got approved uasc online after two days of discussion. It was finally decided to the best idea was to build a large caisson to contain the ship, then lift the caisson out of the water and onto land by air bags.
The uasc online Nanhai uasc online No.1 weighed 2,800 tons under water and when brought out of water, it weighed some 4,800 tons. The
CFAQ Ciaga/Ciaba Construção Naval Convés Destaques Documentação Emprego Entrevistas Filipino Fotos Humor Jurídico Lá Fora Máquinas Navegação Notícias de terra Pesca Petróleo e Gás Praticagem PREPOM Rádio Cipó Segurança Sindmar Sindmestres Tecnologia Vapozeiro Brasileiro
To educate everyone on the use of air bags as a cost effective technique used for ship launching, we reached out to Song Tao of Qingdao Evergreen Shipping Supplies Co.,Ltd . Let s here what he has to say. What were the first uses of air bags in the launching uasc online of ships?
The history of marine air bag ship launching dates back to 1981. Xiao Qinghe ship repair and building shipyard, located in Jinan city of Shangdong Province, uasc online launched a 60 DWT tank barge with air bag suspension on January 20, 1981. Seven air bags were employed in that project. One was 2 meters in diameter uasc online and 6 meters long and used for elevating. The remaining six air bags were 0.8 meters x 6 meters long and acted as the rollers. The initial intention of that trial launch was to develop a prompt, less landform limited ship launching method for warfare purposes.
Over the past twenty years, the airbag ship launching system has made advancements in not only the air bag, but also the ship launching/landing technology. The first generation air bags used a rubber dipped canvas as a reinforcement layer to form the air chamber trunk. Two cone-shaped molds were then used to make the ends and everything was stuck together.
With today s air bags, the whole-enlacing-technology used for manufacturing is done together. Rubber dipped synthetic-tyre-cords are used as the reinforcement layers with the trunk and two cone-shaped ends made at the same time. Everything is enlaced together, so the whole air bag doesn t have any joints. Due to the development of rubber chemistry, the performance of the rubber employed uasc online in the latest air bags is highly enhanced and about 15 times of the first generation bag with the same specifications. uasc online
Regarding the launching/landing uasc online technology, it has also developed. In the beginning, only small and flat bottom ships located uasc online on a fabricated slope could be launched with air bags. Now this technology is more flexible and less limited by the ship and landform. Now any type of ship with a DWT below 55,000 and in a place with enough launching space can be launched using air bags. The launching slope even can be aclinic. It has really developed into a cutting edge technology for launching ships, and especially useful for some marine emergencies.
The main use of Yokohama fenders and Evergreen air bags are definitely different. It is well known that Yokohoma fenders offer an effective fender system providing a soft and stable berthing condition to ships. Evergreen air bags are widely used for ship launching, landing, heavy transport and air lifting. Due to the special use, structures of Evergreen air bags are optimized for safety and built for heavy duty use. The surface layers are enhanced for anti-abrasion and are pierce resistant. Even if they are somewhat wounded, Evergreen air bags can still work safely until repaired. The length of air bags are usually more than 10 meters and two cone-shaped ends make them look like huge sausages. Also, Evergreen air bags never use tires and shackles.
An air bag ship launching system does not need the traditional fabricated slipways so it saves time, investment, land, etc. Air bags need no extra maintenance and after use they can be cleaned and folded in the corner to wait for another mission. It is easy to find that air bags elasticity can give more protection to the launched ship. A remarkable character of air bags is that the working height can be changed to redirect the ship or object being launched by adjusting the inner air pressure. For this character uasc online it is peerless compared to traditional ship launching techniques.
Evergreen air bags are not only used for ships, floating docks and caisson launching uasc online but they are also cutting edge for ship landing, heavy transport, uasc online marine salvage, etc. It is a versatile tool for many marine applications.
The most challenging mission we ever participated in was the ancient ship named Nanhai No.1 salvage project. The project was called the most complicated and expensive salvage project in China s history. (photos of salvage project below) uasc online
It had been revised 6 times and been demonstrated 4 times during the preparing 4 years. In June 2006, the top 22 experts uasc online were collected to demonstrate the latest project which finally got approved uasc online after two days of discussion. It was finally decided to the best idea was to build a large caisson to contain the ship, then lift the caisson out of the water and onto land by air bags.
The uasc online Nanhai uasc online No.1 weighed 2,800 tons under water and when brought out of water, it weighed some 4,800 tons. The
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