DEFWDV025Dive using self-contained underwater breathing apparatus in open water to a maximum depth of 30 metres

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What an assessment for DEFWDV025 must cover

79 assessable components: 8 elements (31 performance criteria), 14 performance evidence and 34 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Prepare for a SCUBA diving operation

  • 1.1Follow a dive plan using industry approved decompression tables and obtain supervisor’s clearance in accordance with organisational procedures
  • 1.2Select, prepare and test equipment in accordance with manufacturer specifications and organisational policies and procedures
  • 1.3Inspect equipment for serviceability, quarantine any unserviceable equipment and report defects to dive supervisor
  • 1.4Confirm independent safety check of fit and function of equipment

2 Enter and exit the water

  • 2.1Position markers in the water to identify presence of divers
  • 2.2Conduct in-water leak test at the surface to ensure the integrity and functionality of equipment
  • 2.3Perform entry and exit techniques at the assigned entry and exit points

3 Descend to, and ascend from, depths ranging from zero to 30 metres

  • 3.1Complete pre-dive buoyancy checks
  • 3.2Maintain measured and controlled breathing and finning
  • 3.3Implement dive descent, decompression and dive ascent techniques in accordance with dive plan and safety procedures
  • 3.4Maintain awareness of, and distance from, surface and sub-surface hazards
  • 3.5Ensure minimal disturbance to bottom to enable maximum visibility and a safe work environment
  • 3.6Undertake checks to ensure safety to surface

4 Identify and manage dive-specific emergencies and problems

  • 4.1Monitor relevant risk factors throughout dive to manage threats and personal safety in accordance with risk assessment
  • 4.2Recognise signs and symptoms of compression and/or decompression related problems in self and others
  • 4.3Implement compression and/or decompression immediate corrective action in accordance with dive plan and safety procedures
  • 4.4Recognise and manage temperature related hazards in self or others and implement appropriate controls in accordance with risk assessment
  • 4.5Recover spatial awareness when balance is lost under conditions of zero visibility
  • 4.6Recover any lost and/or separated diver

5 Communicate underwater

  • 5.1Inspect electronic communications device and accessories for serviceability and fit
  • 5.2Transmit and receive messages using electronic communications devices and communication protocols
  • 5.3De-service and stow electronic communications device and accessories in accordance with manufacturer specifications

6 Perform a simple navigation leg underwater

  • 6.1Maintain compass bearing underwater
  • 6.2Estimate and maintain distance for a constant swim rate underwater

7 React to individual and group contingencies and/or emergencies

  • 7.1Clear flooded face mask and blocked mouthpiece and refit
  • 7.2Resolve failed primary breathing system and manage irrecoverable malfunctions in accordance with dive plan
  • 7.3Manage lost and severed safety lines
  • 7.4Manage significant systemic failures through ditching drill and emergency surfacing drill in accordance with dive plan and safety procedures

8 Operate, inspect and maintain SCUBA breathing gas and personal dive equipment

  • 8.1Inspect and maintain equipment in accordance with manufacturer specifications
  • 8.2Conduct post-activity serviceability tests and re-stow dive and communications equipment in accordance with manufacturer specifications, dive standards and organisational policy and procedures
  • 8.3Quarantine and tag unserviceable equipment and report defects in accordance with organisational procedures

Performance evidence

  • acting as a relay between two callsigns
  • applying relevant legislation, and organisational policies and procedures
  • communicating verbally by radio and diving communication devices and non-verbally through signalling methods
  • complying with assigned callsigns
  • conducting decompression stops and requirements
  • conducting unplanned decompression procedures arising from the onset of compression related problems in operations and in simulated emergency drills
  • demonstrating situational awareness of position and orientation, equipment (including depth, time and breathing gas gauges), and other divers
  • implementing emergency surfacing
  • maintaining records according to organisational policies and procedures
  • managing hazards during dives
  • managing medical complications during dives and recognising these in self and others
  • navigating underwater, using a compass only, a complete triangle of side length not less than 30m (way-points only to be distinguishable within 8m)
  • switching from primary to secondary breathing system
  • taking necessary corrective action/s and managing a range of individual and group contingencies and/or emergencies

Knowledge evidence

  • decompression calculations
  • decompression tables to determine decompression times and depths for a range of dive profiles
  • decompression techniques
  • dive equipment capabilities and limitations
  • dive physics
  • dive physiology and medicine, including:
  • decompression illnesses
  • hypothermia and hyperthermia compression illnesses
  • diving descent and ascent techniques
  • general diving safety awareness, including:
  • diving in harbours
  • diving in tidal waters, currents and tides
  • diving on and/or near a ship’s hull
  • entrapment/foul lines
  • lost/separated
  • marine animal threats
  • pollution/weeds
  • working in confined spaces
  • general precautions to be taken against a range of hazards
  • handling procedures for malfunctioning items
  • line signals
  • marine animal threats
  • navigation theory
  • oceanography
  • organisational policies and procedures
  • principles of underwater communication systems and diver intercom systems, and their limitations
  • radio frequency hazards
  • radio telephone procedures (RTP)
  • relevant hand signals
  • relevant legislation and industry standards
  • safe operating ranges for breathing gas supplies
  • SCUBA equipment maintenance and servicing recording requirements
  • self-contained underwater breathing apparatus (SCUBA) dive equipment specifications, characteristic and limitations
  • surfacing procedures, including awareness of surface and sub-surface hazards

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing DEFWDV025

What does an assessment tool for DEFWDV025 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for DEFWDV025 needs to address all 79 unit components: 8 elements with 31 performance criteria, 14 performance evidence requirements, 34 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for DEFWDV025?

Auditori pulls the current release of DEFWDV025 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for DEFWDV025 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing DEFWDV025 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of DEFWDV025, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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