![](http://upload.wikimedia.org/wikipedia/commons/thumb/8/88/Navy_Diver.jpg/300px-Navy_Diver.jpg)
U.S. Navy diving and salvage operations
The picture shows the picture on the cover of "London Pictorial News" on February 6, 1873: Preparing for diving operations
divingRefers generally to all underwater activities. Includes diving using compressors to supply air from the surface;diverSelf-carrying respiratory systemscuba diving; And do not carry respiratory system, only use light equipmentFree diving。
Light equipment
- Face mirror
- Breathing tube
- Fins
- Wetsuit
Heavy equipment
- Breathing regulator
- Buoyancy Controller (BCD)
- Cylinder
- Counterweight