Unit of competency Outline
Date retreived
23/07/2026 7:02 AM AWST
23/07/2026 7:02 AM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Support SCUBA diving operations from the surface
Support SCUBA diving operations from the surface
Unit of competency
National Code
DEFDV002B
DEFDV002B
State Code
AVV03
AVV03
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
Field of Education
092101 - Sport And Recreation Activities
Original Release Date
Nominal Hours
0
Description
This unit covers the competency required to act as a lazy shot/bail-out operator and diver's attendant in an open water environment.The lazy shot/bail-out operator's purpose is to mark the required decompression depth (through the use of the lazy shot) for ascending divers to service their decompression requirements. As part of the lazy shot rig, additional supplies of air (bail-out cylinders) are provided in the event that divers' personal supplies expire prior to surfacing. This can occur when multiple and/or lengthy decompression periods must be served.The diver's attendant covers all aspects of assistance given to a diver in preparation for the dive, the conduct of the dive (such as management and monitoring of safety/communications lines) and the post-dive refurbishment of equipment.Note: This unit covers the Australian Diver Accreditation Scheme (ADAS) occupational groupings of lazy shot/bail-out operator and diver's attendant in an open water environment. All information was correct at the time of development of this Unit of Competency; however, any diver seeking ADAS accreditation should consult ADAS and not rely on the information contained in this unit.
Notes
Elements and Performance Criteria
1. Prepare and rig lazy shot and bail-out cylinder
- 1.1 Lazy shot, cordage and bail-out cylinder are inspected and prepared.
- 1.2 Lazy shot, cordage and bail-out cylinder are deployed and set at required depth for the decompression stop.
- 1.3 Adjustment for subsequent decompression stops is consistent with the dive plan.
- 1.4 Lazy shot, cordage and bail-out cylinder are de-serviced and stowed for re-use.
2. Attend to a SCUBA (air) diver from the surface
- 2.1 Diver is assisted in fitting and inspecting dive equipment prior to undertaking the dive.
- 2.2 Assistance is provided during the diver's entry into, and exit from, the water from a range of platforms.
- 2.3 Diver's equipment is confirmed for fit and absence of leaks on entering the water.
- 2.4 Diver's safety line is managed throughout the dive and all line signals between the diver and supervisor are interpreted and responded to.
- 2.5 Diver's condition, position and progress are reported regularly and accurately to the supervisor.
- 2.6 Diver is controlled from the surface during a poor visibility search.
- 2.7 Diver is assisted in the removal and stowage of equipment.
The Range Statement relates to the Unit of Competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording in the Performance Criteria is detailed below.
Open water environment includes:
oceans, seas, lakes and rivers
day or night
subsurface conditions:
current (0-2 knots)
visibility (0 metre +)
temperature (0 degrees +)
surface and sub-surface hazards such as:
anchor drop zones
cathodic protection devices
electrical cabling
inlets and sonar/radio
frequency hazards
marine animals piers and jetties
pipelines
pollutants
propellers/thrusters
trapping hazards:
beams
culverts
gates
grottoes and caves
intakes and out-falls
nets
safety, anchor and communications lines
sewers
submerged ships, vehicles and structures
sluices
vessel rocking and associated movement
Lazy shot variations may include:
lazy shot and fixed shot rope
lazy shot and drifting stops
lazy shot and float line
lazy shot and life line
De-servicing may include:
applying protective substances
cleaning
drying
inspecting
refilling (gas)
Inspecting dive equipment may include:
anchorage of safety lines
confirmation of necessary equipment
function of apparatus:
air
buoyancy device
general fit and form
security of buckles and attachments
Entry may include:
dive
forward/backward jump
roll-back
walk-in (backwards)
Platforms may include:
boats
ships
(semi) -permanent platforms
Equipment may include:
breathing system and devices:
pressure:
demand
positive
supply:
independent primary
cylinder configuration:
single
buoyancy devices:
buoyancy compensator
weight belt
dive clothing:
facemask
fins gloves
wet-suit (including booties and hood)
diving accessory equipment:
knife
watch
compass
communications slate
facemask/mouthpiece ensemble
safety equipment:
diver's safety lines
Open water environment includes:
oceans, seas, lakes and rivers
day or night
subsurface conditions:
current (0-2 knots)
visibility (0 metre +)
temperature (0 degrees +)
surface and sub-surface hazards such as:
anchor drop zones
cathodic protection devices
electrical cabling
inlets and sonar/radio
frequency hazards
marine animals piers and jetties
pipelines
pollutants
propellers/thrusters
trapping hazards:
beams
culverts
gates
grottoes and caves
intakes and out-falls
nets
safety, anchor and communications lines
sewers
submerged ships, vehicles and structures
sluices
vessel rocking and associated movement
Lazy shot variations may include:
lazy shot and fixed shot rope
lazy shot and drifting stops
lazy shot and float line
lazy shot and life line
De-servicing may include:
applying protective substances
cleaning
drying
inspecting
refilling (gas)
Inspecting dive equipment may include:
anchorage of safety lines
confirmation of necessary equipment
function of apparatus:
air
buoyancy device
general fit and form
security of buckles and attachments
Entry may include:
dive
forward/backward jump
roll-back
walk-in (backwards)
Platforms may include:
boats
ships
(semi) -permanent platforms
Equipment may include:
breathing system and devices:
pressure:
demand
positive
supply:
independent primary
cylinder configuration:
single
buoyancy devices:
buoyancy compensator
weight belt
dive clothing:
facemask
fins gloves
wet-suit (including booties and hood)
diving accessory equipment:
knife
watch
compass
communications slate
facemask/mouthpiece ensemble
safety equipment:
diver's safety lines
Critical aspects for assessment and evidence required to demonstrate competency in this unit
Assessment must confirm the ability to rig and set lazy shot and bailout at appropriate depth/s; to maintain communications; and to maintain attention to the diver throughout the dives.
Consistency in performance
Competency should be demonstrated over a variety of tasks including:
transmitting at least two messages from the supervisor to the diver
relaying at least two messages from the diver to the supervisor
controlling a searching diver, at a minimum, in poor visibility (less than 2 metres) for 4 legs of 25 metres (e.g. parallel search).
Context of and specific resources for assessment
Context of assessment
Competency should be assessed in the ocean supported by questioning on shore or aboard vessels.
When practicable, assessment should relate to the diver’s vocational focus.
Specific resources for assessment
Access to a complete range of diving, safety and accessory equipment; lazy shot and bailout equipment; and a dive platform.
Assessment must confirm the ability to rig and set lazy shot and bailout at appropriate depth/s; to maintain communications; and to maintain attention to the diver throughout the dives.
Consistency in performance
Competency should be demonstrated over a variety of tasks including:
transmitting at least two messages from the supervisor to the diver
relaying at least two messages from the diver to the supervisor
controlling a searching diver, at a minimum, in poor visibility (less than 2 metres) for 4 legs of 25 metres (e.g. parallel search).
Context of and specific resources for assessment
Context of assessment
Competency should be assessed in the ocean supported by questioning on shore or aboard vessels.
When practicable, assessment should relate to the diver’s vocational focus.
Specific resources for assessment
Access to a complete range of diving, safety and accessory equipment; lazy shot and bailout equipment; and a dive platform.
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| BBD08 | DEFWDV002 | Support SCUBA diving operations from the surface | Unit of competency |
