Diving need use of:
- mask, pipe, flippers
- cylinder(one or more) with compressed air or other gas
- respiratory automaton enable to free breath
- Jacket or wing to swim control
- Diving anorak - wet of dry deppending of conditions
- leaded weight
- Computers or diving table, deepometer and watch to define safe deep, measure time to stay underwater and remaining time without decompression (recretional diving) or to define decompress do make underwater (others diving types) according to dive plan.
- manometer to define amount of respiratory factor in cylinder.
- cutting tool (knife or garden shears) to free, when you become entangled.