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Night Diving. We will cover. Why and Who should go Dive Planning Extra Equipment Personal Boat Shore Based Dive Brief & Buddy Checks During the Dive After the Dive. Why go Night Diving?. Underwater life different Challenge, pushing out the envelope

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Presentation Transcript
we will cover
We will cover
  • Why and Who should go
  • Dive Planning
  • Extra Equipment
    • Personal
    • Boat
    • Shore Based
  • Dive Brief & Buddy Checks
  • During the Dive
  • After the Dive
why go night diving
Why go Night Diving?
  • Underwater life different
  • Challenge, pushing out the envelope
  • Different procedures, new skills
who should go
Who Should Go
  • Recommended Club Diver (Diver **)
  • Experienced Diver
planning
Planning
  • Local Knowledge
  • Dive the site in daylight
  • Note hazards & alternate exit point
  • Lights on shore to aid navigation
personal equipment
Personal Equipment
  • Torch or Lantern, types, min. one per diver
  • Back up light recommended
  • Good batteries
  • Light sticks
  • Whistles
  • Min tank size of 12 l.
boat equipment
Boat Equipment
  • Lights to be seen by other vessels
  • Lights to see diver on the surface
  • Correct use of lights & backups
  • Shot line light or strobe
shore based equipment
Shore Based Equipment
  • Marking of exit point
  • Use of ‘Leading Lights’
  • Emergency Vehicle
  • Slip or other boat recovery area
dive brief
Dive Brief
  • Correct use of lamps
  • Procedure if a torch fails
  • Procedure for lost buddy
  • Depth and direction / navigation
  • Beware of looking only at the lit area
  • Procedure if lost on the surface
  • Diver recall signals
  • Extra care by cox’n.
signals using dive torch
Signals Using Dive Torch

O.K.

Something wrong

(Click on images)

buddy check
Buddy Check
  • All the usual checks
  • Lamps OK?
  • Compasses OK?
  • Demonstrate use of lamps
during the dive
During the Dive
  • All the normal procedures
  • Don’t shine in buddies face (or your own)
  • Check buddy often
  • Monitor direction constantly
  • Look all around, not only down
after the dive
After the Dive
  • Report to the shore marshal
  • Complete logs and debrief
  • Take care in the boat & unloading
  • Check for gear left behind
summary
Summary
  • Extra Planning & Equipment
  • New Skills - Use of lamps
  • Maintain “Night Vision”
  • Safety in Boat Handling
  • Safety & Consideration on Shore
when may a dive be classified as a night dive
When may a dive be classified as a ‘Night Dive’?
  • Between sunset & sunrise
  • During hours of total darkness
  • After midnight
when may a dive be classified as a night dive1
When may a dive be classified as a ‘Night Dive’?
  • Between sunset & sunrise
  • During hours of total darkness
  • After midnight
divers lamps and torches are used to
Divers lamps and torches are used to:
  • Illuminate hand signals
  • Allow the diver to be seen
  • Allow the diver to see
  • All the above
divers lamps and torches are used to1
Divers lamps and torches are used to:
  • Illuminate hand signals
  • Allow the diver to be seen
  • Allow the diver to see
  • All the above
night diving can be more stressful and result in
Night diving can be more stressful and result in:
  • Night blindness
  • Loss of feeling in the hands
  • Greater air consumption
  • Fear of depth
night diving can be more stressful and result in1
Night diving can be more stressful and result in:
  • Night blindness
  • Loss of feeling in the hands
  • Greater air consumption
  • Fear of depth
we must not shine lamps directly into other divers eyes because
We must not shine lamps directly into other divers eyes, because:
  • They will see us
  • Their ‘Night Vision ‘ will be reduced
  • They will be seen by the cox’n
  • We will see them
we must not shine lamps directly into other divers eyes because1
We must not shine lamps directly into other divers eyes, because:
  • They will see us
  • Their ‘Night Vision ‘ will be reduced
  • They will be seen by the cox’n
  • We will see them
a cox n must carry spare lamps so that
A cox’n MUST carry spare lamps, so that:
  • A diver, whose lamp has failed may borrow one
  • The assistant cox’n will have a light of their own
  • There will always be a light in the boat
a cox n must carry spare lamps so that1
A cox’n MUST carry spare lamps, so that:
  • A diver, whose lamp has failed may borrow one
  • The assistant cox’n will have a light of their own
  • There will always be a light in the boat
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