Deep Diving

• What is deep diving?

• Planning Considerations

• Narcosis

• Decompression Sickness

• Equipment

• USCG Duane

Deep Diving

• Deep diving definition

• The Maximum Recreational limit

• Technical Diving

Deep Diving

• Reasons for deep diving

• Extending depth limits

• Stress

Deep DivingAdditional Considerations

• Safety stops• Emergency

procedures• Surface support• Buddy techniques

Planning Considerations

• Shorter bottom times• Density• Air Consumption• No-Decompression

Limits

Nitrogen Narcosis

• What is narcosis?• Effects• Concerns• Prevention

Nitrogen NarcosisEvaluation

• Timed math problems– Surface– At depth

Decompression Sickness

• The “Bends”• Caisson Disease

– What causes DCS?

– Contributing Factors

Decompression SicknessSymptoms

• Pain in joints• Weakness• Skin Rash• Numbness • Vomiting• Visual disturbances• Tingling• Dizziness

• Decreased sensation• Paralysis• Unconsciousness• Extreme Fatigue• Headache• Ringing Ears• Muscle pain• Personality change

Decompression Sickness

• Symptom Onset• First Aid• Hyperbaric Treatment

Decompression SicknessPrevention

• Dive Planning

• Table use/dive computer

• No-Decompression Limits

• Bottom times

• Ascent Rates

Deep Diving Gear

• Suitable Regulator• SPG• Timing and Depth • Redundant supply• Additional Tanks• Descent Line

Deep Dive - USCG Duane

• Commissioned 1936

• De-Commissioned 1985

• Sunk 1987 – Artificial Reef

• 327 ft. long

• Cost $2,468,460

• Lies in 130 fsw

Deep Dive - Duane

• Max Depth-110

• Max Bottom Time-15 min

• Ascent Pressure-1200 psi

• Ascent Time- 12 min

Deep Dive Duane

• Entry

• Descent

• The Dive– Groups, Currents, Goals

• Emergency Procedures

Deep Dive Duane

• Ascent

• Safety Stop

• Boarding the boat

• Roll Call

Deep Diving - End

• What is deep diving?

• Planning Considerations

• Narcosis

• Decompression Sickness

• Equipment

• USCG Duane