Lifting Airbag

A shipwreck lifting airbag (also known as wreck lifting airbag or salvage airbag) is a specialized piece of equipment used for marine or underwater salvage operations. Its primary function is to help raise sunken ships or objects to the surface by generating buoyancy through air inflation. These airbags are widely used in shipwreck recovery, underwater rescue, and emergency flotation tasks.

Working Principle of Shipwreck Lifting Airbags

Lifting airbags are typically made from high-strength rubber and synthetic materials, providing excellent resistance to pressure and corrosion. When inflated, the airbag generates buoyancy, gradually lifting the sunken ship or object to the surface. The working principle is as follows:

1. Inflation: The airbag is inflated using a special inflation device. Once inflated, the airbag increases in volume, producing buoyancy.
2. Buoyancy: The buoyant force of the airbag helps raise the sunken object. The number and size of airbags can be adjusted to control the lifting process.
3. Gradual Lift: To avoid causing damage by lifting too quickly, the inflation is typically carried out in stages, allowing the airbag to gradually lift the wreck or object in a stable manner.

Types of Shipwreck Lifting Airbags

1. Rubber Airbags: The most common type used in shipwreck lifting, typically made from high-pressure, corrosion-resistant rubber materials. They can be used underwater for long durations and are adaptable to various depths and environments.
2. Composite Material Airbags: These airbags use multiple layers of composite materials, providing higher durability and strength. They are suited for operations under extreme conditions.
3. High-Pressure Airbags: These are designed for salvage tasks requiring greater buoyancy support, often used for larger sunken ships or heavy objects.