OS1 Being Underwater
1 Briefing
2 Entry into shallow water without equipment by ladder or wading
3 Fit and practice with mask fins and snorkel Standing depth.
Mask demisting/fitting
Method of securing snorkel
Breathing through snorkel, face submerged, static
Flood snorkel/clear by blowing (static, standing)
Fit fins, finning action on back and front
Flood/clear snorkel while finning, face submerged
Remove fins, mask & snorkel
4 Kit up with SCUBA unit and carry out buddy checks
5 Breathing from demand value, standing depth
6 Buoyancy control - standing depth
Inflate and deflate the BC on the surface, using the direct feed
7 Swimming on the surface on the back, BC inflated Standing depth
Finning action
Attitude in the water
8 Buoyancy check and swimming underwater Standing depth
Buoyancy check Fin pivot
Swim underwater
9 Swimming underwater to/ in/ from deeper water
Buoyancy adjustment with changing depth
Finning action and attitude control
10 Remove equipment
11 Exit from shallow water by ladder or wadding
12 Debriefing
13 Equipment care
OS2 Basic Skills
1 Briefing
2 Prepare SCUBA unit
Assembly and functional check
3 Kit up and buddy check
4 Entry into shallow water by ladder or wading
5 Buoyancy check, standing depth
6 Swimming on surface, BC inflated
On back, BC inflated
On front, breathing from DV, BC partial inflated
Swimming on the surface changing from demand value to snorkel
7 Breathing without mask, nose submerged, standing depth
8 Retrieve and clearing demand value Standing depth
Demand valve clear exhale, perform twice
Demand valve clear purge button, perform twice
Retrieve demand valve and clear, perform twice
(Competence/confidence performance standard)
9 Mask clearing, standing depth
Initial clear
Progressive flood
Remove and replace
10 Use alternative air source Standing depth
As donor and recipient
11 Swimming underwater to deeper water
12 Controlled ascent and descending using BC Deeper water
Mini ascent/decent
Ascent/descent
13 Swimming underwater to shallower water
14 Exit water by wading or via steps
15 Remove SCUBA unit
16 Debriefing
17 Equipment care
OS3 Developing Skills
1 Briefing
2 Preparing SCUBA unit
Assembly
Functional check
3 Kit up and buddy check
4 Entry into deeper water using a stride entry
5 Controlled descent into deeper water
6 Swim underwater to standing depth
Finning action
Buoyancy control
7 Mask clearing recap in standing depth
Partial flood
Full flood
Remove & replace
8 Breathing from a free flowing demand valve standing depth
9 Swim to deeper water
10 Mask clearing in deeper water
Partial flood
Full flood
Remove & replace
(Competence/confidence performance standard)
11 Use of alternative air source deeper water
Static, as donor and recipient
AAS ascent, as donor and recipient
12 Buoyancy control
BC Inflate stuck open
Mid water hover
(Competence/confidence performance standard)
12 Normal ascent from deeper water
13 Deep water exit via ladder
14 Debriefing
15 Equipment care
OS4 Beyond the basics
1 Briefing
2 Prepare SCUBA unit
Assembly
Functional check
3 Kit up and buddy check
4 Entry into deep water using backward roll
5 Make a controlled descent in deep water
6 Mask clearing in deeper water
Remove and replace
7 Finning without mask
8 Forward rolls deeper water
9 Ascent in buddy pairs
10 Remove SCUBA unit (and weights/ belts) at surface and exit from deeper
water
11 Kit up in snorkelling equipment
12 Enter deep water by forward roll
13 Surface dives in deeper water
Surface dives/surfacing drill, repeat several times
Snorkel clearing displacement method
Consolidation
(Competence/confidence performance standard)
14 Exit as for a small boat
15 Debriefing
16 Equipment care
(Competence/confidence performance standard)
OS 5 Safety skills
1 Briefing
2 Prepare SCUBA unit
Assembly
Functional check
(Competence/confidence performance standard)
3 Kit up and buddy check
(Competence/confidence performance standard)
4 Enter deep water using a forward roll
5 Use of alternative air source Deeper water
AAS Ascent, as both donor and recipient
(Competence/confidence performance standard)
6 Towing a casualty Standing depth
Towing hold Static
Tow
7 Controlled Buoyant lift (CBL) Deeper water
Self Lift
Mini CBL
CLB
Rescue CBL
CBL and TOW
(Competence/confidence performance standard)
8 Deep water exit, via ladder
9 Debriefing
10 Equipment care
001 The First Open Water dive
1 Briefing
2 Fit protective clothing
Put on suit
Fit additional weight to belt/pouches
3 Prepare SCUBA unit
4 Kit up and buddy check
Fit weight belt/weights, then SCUBA unit
Locating and operating critical items wearing gloves
5 Enter water
Steps or wading into standing depth
6 Equipment fit and buoyancy check Standing depth
Mask fit
Check mask seals
Buoyancy checks fin pivot
7 Dive to a maximum of six meters
Enjoyment
Buoyancy control with changing depth
Finning action and swimming attitude
Impact on the underwater environment
8 Mouthpiece and mask clearing standing depth
Mouth piece retrieval and clearing
Partial mask clear
9 Weight and jettison check standing depth
Weight check with low air contents
Weight belt/weight jettison
10 Exit
Exit water by wading or steps
11 Dekit
12 Debrief
13 Equipment care
See instructor manual for guidance on adapting this lesson to different
circumstances.
OO2 Second open Water dive
1 Briefing
2 Prepare SCUBA unit and put on protective clothing
3 Kit up and buddy check
Dry run in the AAS exercise
Dry run of the stuck inflate drill
4 Entry Standing depth
Steps or wading
5 Skills practice 2m
(All competence/confidence performance standard except buoyancy control & AAS use)
Buoyancy control mid water hover
Inversion recovery
Dry suit inflate stuck open
Mouth piece retrieval and clear
Mask flood
Partial
Full flood
Remove & replace
Breathe from an alternative air source static
6 Carry out exploratory dive to approx. 10 m
Buoyancy control with changing depth Decent
Finning action and swimming attitude
Aware of and impact on the underwater environment
Pilotage demonstration
Buoyancy control with change depth ascent
(Competence/confidence performance standard)
7 Exit
Exit water by wading or steps
8 Debrief
9 Equipment care
See instructor manual for guidance on adapting this lesson to different
circumstances.
OO3 The Third Open Water Dive
1 Briefing
2 Prepare SCUBA unit
3 Kit up and buddy check
Recap AAS as dry run
4 Deep water entry stride or backwards roll
5 Vertical/ near vertical descent
(Competence/confidence performance standard)
Buoyancy control with changing depth
Descent arrested just clear of the bottom
6 Personal and rescue skills at 6 m
(Competence/confidence performance standard)
Mask clearing
Partial
Full flood
Remove and replace
AAS Ascent from 6m as both donor and receiver
7 Exploratory dive to between 12 and 15 meters
Buoyancy control
Finning action and swimming attitude
Awareness of and impact on the under water environment
Dive leading demonstration
Buddy monitoring
Depth/air/time management
Pilotage
I nterest
8 Vertical/ near vertical ascent
Buoyancy control with changing depth
Ascent check
9 Deep water exit as for boat or on to jetty
10 De- kit
11 Debrief
12 Equipment care
See instructor manual for guidance on adapting this lesson to different circumstances.
OO4 The fourth Open water dive
1 Briefing
2 Prepare SCUBA unit
3 Kit up and Buddy check
CBL dry run
4 Deep water entry
As from boat or jetty
5 Descent
Vertical/near vertical descent, arrested just clear of bottom
6 Rescue skills from 6m
(Competence/confidence performance standard)
Mini CBL
CBL to surface
To surface 25m
7 Exploratory dive between 15 and 20 meters
(Competence/confidence performance standard)
Buddy monitoring
Dive leading
Depth/time/air management
Pilotage
I nterest
8 Ascent
Vertical/near vertical ascent ascent check
9 Weights/ weight belt jettison Shallow water
J ettison weights/weight belts from casualty
(Competence/confidence performance standard)
10 Exit
Appropriate to local conditions
10 De Kit
11 De brief
12 Equipment care
Note: Buoyancy control throughout lesson
(Competence/confidence performance standard)
See instructor manual for guidance on adapting this lesson to different
circumstances.
005 The Fifth Open Water dive
1 Briefing
2 Dive leading planning
(Competence/confidence performance standard)
3 Prepare SCUBA unit
4 Kit up and buddy check
(Competence/confidence performance standard)
5 Entry
Suitable for local conditions
6 Student dive leading practice to between 12 and 20 meters
(Competence/confidence performance standard)
Buddy monitoring
Depth/time/air management
Pilotage
7 Weight check with low contents 2m
Mid water hover
8 Weights/ weight belt jettison standing depth
J ettison own weights/weight belts
(Competence/confidence performance standard)
9 Exit
Suitable for local conditions
10 De kit
11 De brief
See instructor manual for guidance on adapting this lesson to different
circumstances
