目次

Deep diving specialty

Certification card

Equipment 1

Equipment 2

Equipment 3

Equipment 4

Prevention for decompression sickness 1

Prevention for decompression sickness 2

Prevention for decompression sickness 3

Symptoms of decompression sickness

Treatment for decompression sickness

Prevention for Nitrogen Narcosis

Treatment for Nitrogen Narcosis

Plans and rules

Changes in air consumption rate

Calculation of dive time limit

Depth limit

Boat support

Diving preparation

Descent

Underwater action

Ascent and exit

Emergency action


More than 80% of the symptoms of decompression sickness that occur during leisure diving, are stabbing pain in joints (especially shoulders, elbows, knees) and muscles and weakness in limbs.

If you fell such symptoms within 36 hours of after the dive, you should suspect decompression sickness.

In addition, the following symptoms may occur as other symptoms.

*Itching and redness of the skin

*Sensory abnormalities

*Breathlessness, Dyspnea

*Lower blood pressure

*Unclear consciousness

*Dizzy

*Nausea

*Tinnitus

*Hearing loss

*Limb paralysis

*Sensory impairment

*Urinary retention

*Urinary incontinence

*Language disorder

*Headache, stomachache

*Consciousness disorder

In addition, if you have been diving for a long time without observing the ascent speed, the bones of the joints will be deformed due to bone disorders and will not move, making walking difficult.


Be careful of itching and redness of the skin



Correct ascent rate prevents bone damage



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