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Copyright 2012 CFT NITE/1ISO 24801-2 / EN 14153-2 "AUTONOMOUS DIVER"
Night DivingNight Diving
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
Copyright 2012 CFT NITE/3
Why go Night Diving? Underwater life different Challenge, pushing out the envelope Different procedures, new skills
Copyright 2012 CFT NITE/4
Who Should Go Recommended Club Diver (Diver **) Experienced Diver
Copyright 2012 CFT NITE/5
Planning Local Knowledge Dive the site in daylight Note hazards & alternate exit point Lights on shore to aid navigation
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.
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
Copyright 2012 CFT NITE/8
Shore Based Equipment Marking of exit point Use of ‘Leading Lights’ Emergency Vehicle Slip or other boat recovery area
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.
Copyright 2012 CFT NITE/10
Signals Using Dive Torch
O.K. Something wrong
(Click on images)
Copyright 2012 CFT NITE/11
Buddy Check All the usual checks Lamps OK? Compasses OK? Demonstrate use of lamps
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
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
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
Copyright 2012 CFT NITE/15ISO 24801-2 / EN 14153-2 "AUTONOMOUS DIVER"
QuestionsQuestions
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
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
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
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
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
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
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
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
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
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
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