5 наиболее распространенных подушек безопасности для морских судов

What Are Salvage Airbags?

Salvage airbags are strong, inflatable tubes. They help lift sunken or stranded ships by giving buoyancy under the hull. Divers place them under the vessel and fill them with air. As they inflate, they lift the vessel upward.

5 Most Common Types of Salvage Airbags

Salvage airbags come in five main types. They vary in design and use. Let’s look at each type in a simple way.

1. Totally Enclosed Marine Salvage Airbags

These are sealed, cylindrical airbags. They often use screw‑type ends, not welded seams. This design makes them strong and safe to use in heavy lift jobs. They also include safety valves that prevent bursting if pressure gets too high.

2. Marine Salvage Rubber Airbags

These marine salvage airbags use many layers of synthetic tire‑cord fabric and rubber. They resist abrasion and can handle high pressure. They are heavier but highly durable.

3. Pillow Flotation Lift Bags

These bags have a flat, pillow‑like shape. They work well for laying under ship parts or floating sections. They are useful for low‑profile buoyancy tasks.

4. Steel Salvage Pontoon

These are rigid steel pontoons used like support floats. They work as pontoons in very heavy salvage. They need extra equipment and time to deploy.

5. Parachute Lift Bags (Underwater Lift Bags)

These are shaped like parachutes and often made from PVC fabric. They suit deep-water and precise lifts. Divers position them carefully and inflate slowly to control lift.

How Do Salvage Airbag Work?

Divers first place deflated salvage airbags beneath or alongside the sunken structure. Then they slowly fill the airbags with compressed air. As air fills, the tubes generate buoyant force. That force lifts the vessel or object.

Airbags are lighter and easier to transport than cranes or pontoons. They fold small when not in use and inflate quickly underwater.

Key Specs: Size, Layers, Pressure

Many salvage airbags follow ISO 14409 standards. Diameter ranges from 0.6 m to 2.8 m. Length goes from 5 m up to 28 m or more.
Typical layer count goes from 3 to 12 layers. Each layer adds strength. Higher layers let the bag hold higher pressure (e.g. up to 0.37 MPa for 10 layers at ~1.2 m diameter).

Benefits of Salvage Airbags

• Cost‑friendly and fast: They cost less than cranes or docks. They deploy fast with simple gear.
• Safe: Enclosed airbags include pressure safety valves. Rubber and steel types resist damage on rough seabeds.
• Flexible: They work well in shallow or deep water, and for many load sizes and shapes.

Choose the Right Type: Quick Guide

For most general salvage, totally enclosed rubber airbags offer strong lift, durability, and safety features.

Safety Tips for Use

1. Train divers and crew before operation.
2. Use safety valves and follow inflation rate guidelines.
3. Place airbags evenly to avoid tipping or uneven force.
4. Watch for sudden surfacing or air loss that may drop the vessel quickly – this is dangerous.
5. Inspect airbags before and after use. Clean off salt, oil, and sharp debris. Store in cool, dry space.

Human Note: Why It Matters

When you use запасные подушки безопасности, you use a smart, flexible tool to save a vessel. This method reduces heavy gear, cuts cost, and speeds up work. Many engineers and divers trust airbags for quick, safe ship recoveries. They lift with care and precision—and they don’t scare the crew like cranes or pontoons can.

Заключение

Salvage airbag offer reliable buoyancy for marine reclaim projects. The five main types—totally enclosed airbags, rubber airbags, pillow lift bags, steel pontoons, and parachute lift bags—cover all needs from heavy‑duty salvage to precise deep‑sea work. They deliver cost‑efficiency, safety, and ease of use. Choose the right type for your vessel and diving conditions. Always train well, inspect equipment, and handle inflation carefully. In the world of marine salvage, запасные подушки безопасности stand out as a powerful solution.