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Copyright 2012 CFT NITE/1ISO 24801-2 / EN 14153-2 "AUTONOMOUS DIVER"
Night DivingNight Diving
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Copyright 2012 CFT NITE/2
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
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Copyright 2012 CFT NITE/3
Why go Night Diving? Underwater life different Challenge, pushing out the envelope Different procedures, new skills
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Copyright 2012 CFT NITE/4
Who Should Go Recommended Club Diver (Diver **) Experienced Diver
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Copyright 2012 CFT NITE/5
Planning Local Knowledge Dive the site in daylight Note hazards & alternate exit point Lights on shore to aid navigation
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Copyright 2012 CFT NITE/6
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.
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Copyright 2012 CFT NITE/7
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
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Copyright 2012 CFT NITE/8
Shore Based Equipment Marking of exit point Use of ‘Leading Lights’ Emergency Vehicle Slip or other boat recovery area
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Copyright 2012 CFT NITE/9
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.
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Copyright 2012 CFT NITE/10
Signals Using Dive Torch
O.K. Something wrong
(Click on images)
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Copyright 2012 CFT NITE/11
Buddy Check All the usual checks Lamps OK? Compasses OK? Demonstrate use of lamps
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Copyright 2012 CFT NITE/12
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
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Copyright 2012 CFT NITE/13
After the Dive Report to the shore marshal Complete logs and debrief Take care in the boat & unloading Check for gear left behind
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Copyright 2012 CFT NITE/14
Summary Extra Planning & Equipment New Skills - Use of lamps Maintain “Night Vision” Safety in Boat Handling Safety & Consideration on Shore
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Copyright 2012 CFT NITE/15ISO 24801-2 / EN 14153-2 "AUTONOMOUS DIVER"
QuestionsQuestions
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Copyright 2012 CFT NITE/16
When may a dive be classified as a ‘Night Dive’?
a) Between sunset & sunriseb) During hours of total darknessc) After midnight
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Copyright 2012 CFT NITE/17
When may a dive be classified as a ‘Night Dive’?
a) Between sunset & sunriseb) During hours of total darknessc) After midnight
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Copyright 2012 CFT NITE/18
Divers lamps and torches are used to:
a) Illuminate hand signalsb) Allow the diver to be seenc) Allow the diver to seed) All the above
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Copyright 2012 CFT NITE/19
Divers lamps and torches are used to:
a) Illuminate hand signalsb) Allow the diver to be seenc) Allow the diver to seed) All the above
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Copyright 2012 CFT NITE/20
Night diving can be more stressful and result in:
a) Night blindnessb) Loss of feeling in the handsc) Greater air consumptiond) Fear of depth
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Copyright 2012 CFT NITE/21
Night diving can be more stressful and result in:
a) Night blindnessb) Loss of feeling in the handsc) Greater air consumptiond) Fear of depth
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Copyright 2012 CFT NITE/22
We must not shine lamps directly into other divers eyes,
because: a) They will see usb) Their ‘Night Vision ‘ will be reducedc) They will be seen by the cox’nd) We will see them
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Copyright 2012 CFT NITE/23
We must not shine lamps directly into other divers eyes,
because: a) They will see usb) Their ‘Night Vision ‘ will be reducedc) They will be seen by the cox’nd) We will see them
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Copyright 2012 CFT NITE/24
A cox’n MUST carry spare lamps, so that:
a) A diver, whose lamp has failed may borrow oneb) The assistant cox’n will have a light of their ownc) There will always be a light in the boat
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Copyright 2012 CFT NITE/25
A cox’n MUST carry spare lamps, so that:
a) A diver, whose lamp has failed may borrow oneb) The assistant cox’n will have a light of their ownc) There will always be a light in the boat