Chapter1

Question 1

Risks of Reef and Wall diving

Answer 1

Loss of bouyancy
Currents (including vertical)
Going deeper than intended

Question 2

Risks of Wreck Diving

Answer 2

Entanglement
Low viz
Tide
Sharp metal
DSMB torch knife

Question 3

No clear surface: safeguards

Answer 3

Agreed by buddy pair
Exit point kept in view
Experienced buddy
Rule of thirds
Backup gas

Question 4

Risks of drift diving

Answer 4

Buddy separation
Surface cover separation
Viz
Turbulence/up and down currents
Entanglement of diver or SMB
Cold (not exerting)

Question 5

Safeguards for drift diving

Answer 5

Avoid rough water
Obstructions
Viz
Variable depths
DSMB

Question 6

Risks of night diving

Answer 6

Separation

Disorientation

Question 7

Safeguard for night diving

Answer 7

Known site
Shallow dive
Good viz
Communication - torch and backup
Light on SMB

Question 8

Deep diving risks

Answer 8

DCI
Narcosis
Gas density = more effort to breathe
More gas
Dark
Deco soft ceiling

Question 9

Deep diving safeguards

Answer 9

Experience
Depth time and deco planning
Narcosis
Backup gas

Question 10

Diving with inexperienced buddy

Answer 10

Brief basics - dry suit squeeze, ear clearing etc
Use gas more quickly
Don't rush 
Assist kit up
Role model

Question 11

Key elements of risk assessment

Answer 11

Personal limits
Comfort factor
Correct equipment

Question 12

What are 3 main divisions of incident procedure sheet

Answer 12

Outline of incident procedure + contact details
Procedure for dealing with DCI
Space for dive history

Question 13

What questions does a Dive Manager answer

Answer 13

Why - objective of dive
Who are the divers - experience
Where - site and suitability
When - date and time
What else required - support, equipment

Question 14

What chart identifies Admiralty symbols

Answer 14

5011

Question 15

Stress signs in buddy

Answer 15

Nervous/reluctant
Excuses
Repeated questions
Slow kitting up/fiddling

Question 16

How to anticipate problems during dive

Answer 16

Monitor air/depth
Monitor buddy
Resolve small problems before become big
Terminate dive early

Question 17

Factors aid incident prevention

Answer 17

Training and practice
Build up of experience
Buddy system
Well maintained equip
Planning and monitoring

Question 18

How to ensure casualty secure on surface

Answer 18

Positively buoyant

Face clear of water

Question 19

Priorities of first aid

Answer 19

DR ABC
Severe Bleeding
DCI
Other

Question 20

Helicopter lift techniques

Answer 20

High line (obstruction/boat motion) don’t tie or pull line
Direct - wind 20 deg PORT BOW
Alt small boat technique - boat stationery

Question 21

How far do you compress an adult’s chest

Answer 21

4-5cm

Question 22

After vomiting

Answer 22

Check airway clear

Question 23

How often change sides for Recovery How position

Answer 23

Every 30m

Question 24

Where should you be positioned to use a pocket mask during BLS

Answer 24

Above casualty’s head

Question 25

In what way can a positive pressure resuscitation mask set to too high a flow rate harm a casualty?

Answer 25

Inflating the casualty's stomach, causing stomach contents to be displaced into the throat

Question 26

What are the benefits of a reservoir mask over a pocket mask?

Answer 26

It gives a higher oxygen concentration

Question 27

Which of the following are alternative names for a reservoir mask?

Answer 27

Hudson | Non-rebreathing

Question 28

Which is the correct way to use a reservoir mask?

Answer 28

Fill the bag before use

Question 29

What feature must a storage case have if it is to be used to house an oxygen cylinder?

Answer 29

A pressure release valve

Question 30

Roughly what proportion of all diving casualties is likely to require rescue breaths?

Answer 30

1/10

Question 31

Treat second casualty simultaneously or serious one first

Answer 31

Simultaneously

Question 32

Why should divers administer oxygen only to other divers?

Answer 32

The medical requirements to be a diver are such that a diver will not be harmed by oxygen administration People with conditions such as chronic lung diseases may suffer adversely, possibly to a fatal extent, by the administration of oxygen Divers could be sued for negligence if the casualty is not a diver suffering a diving related problem

Question 33

Which of the following makes for the best transit, other things being equal?

Answer 33

Nearest feature closer to the eye than to the other feature

Question 34

Who has the final say about when it is unsafe to dive?

Answer 34

The skipper and/or the dive manager

Question 35

How should surplus line be dealt with when constructing a shot line?

Answer 35

Coil or bag it close to the buoy, or let it float as a 'trail line'

Question 36

Which of the following can be used for fixing attachments to the middle of a shotline?

Answer 36

Karabiner Rolling Hitch Prusik knot