When it comes to recovering objects from shallow water, commercial divers have a number of techniques at their disposal. One of the most effective and widely used of these techniques is known as “air lifting.” In this article, we’ll take a closer look at the air lifting method and explore the different stages and lifting methods involved in the process.
Air Lifting Technique:
Air lifting is a technique used by commercial divers to recover objects from shallow water. It involves using compressed air to create a vacuum that lifts the object to the surface. The process typically involves several stages, each of which is critical to the success of the operation.
Stage 1: Preparation
The first stage of the air lifting process involves preparing the object for recovery. This may involve clearing away any debris or obstacles that could interfere with the lifting process, as well as attaching lifting bags or other lifting equipment to the object to be lifted.
Stage 2: Air Supply
Once the object is prepared, the next stage is to supply compressed air to the lifting equipment. This is typically done using a high-pressure air compressor or similar equipment, which is used to pump air into the lifting bags or other lifting equipment.
Stage 3: Lifting
With the lifting equipment in place and the air supply established, the next stage is to begin the lifting process. This typically involves gradually increasing the air pressure to create a vacuum that lifts the object to the surface. The lifting process may take several hours, depending on the size and weight of the object being lifted.
Popular Lifting Methods:
There are several different lifting methods that can be used in conjunction with the air lifting technique to recover objects from shallow water. Some of the most popular methods include:
- Lift Bags: Lift bags are inflatable bags that are attached to the object to be lifted. They are typically filled with compressed air to create a buoyancy force that lifts the object to the surface.
- Davit Systems: Davit systems are mechanical lifting systems that are used to lift heavy objects from the water. They typically consist of a crane or other lifting mechanism mounted on a boat or other platform.
- Jetting: Jetting is a technique that involves using high-pressure water jets to clear away debris or sediment around the object to be lifted. This can help to create a clear path for the lifting equipment and improve the efficiency of the lifting process.
Conclusion about commercial diver work
The air lifting technique is a powerful and effective method for recovering objects from shallow water. By following the proper stages and using the right lifting methods, commercial divers can safely and efficiently recover a wide range of objects from the water. And let’s be honest, who doesn’t love seeing a giant object being lifted out of the water by divers with high-tech equipment? It’s like watching an underwater superhero movie in real life.
- “Air Lifting” – US Navy Diving Manual, Revision 6
- “Underwater Lifting Methods and Their Applications” – Marine Technology Society Journal, Volume 47, Number 3
- “Commercial Diving: Air Lifting Techniques” – Diving Unlimited International (DUI)