Unit of competency Outline

Date retreived
22/07/2026 11:36 PM AWST

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Use underwater acoustics to map waterways

Use underwater acoustics to map waterways

Unit of competency
National Code
NWPHYS007
State Code
OAP08
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
21/12/2018
View on TGA
State Implementation and Classification
Approved Date
18/04/2019
Field of Education
031103 - Mapping Science
Original Release Date
18/04/2019
Nominal Hours
25
Description
This unit involves the skills and knowledge required to use underwater acoustics to map waterways.It includes applying acoustic theory and using single beam, side scan sonar and swath echo sounders. It also includes using sonar systems, reviewing and reporting results and understanding the differences between the different methods. This unit supports the attainment of skills and knowledge required for leaders with responsibility for performing hydrographic surveying and may lead to certification as a hydrographic surveyor.
Notes
Elements and Performance Criteria
1 Apply underwateracoustics
  • 1.1 Analyse and determine the generation of acoustic waves in relation to hydrographic surveying
  • 1.2 Analyse the propagation of acoustic waves for hydrographic surveys
  • 1.3 Determine reflection and scatter of acoustic waves and analyse effects on system performance of acoustic equipment
  • 1.4 Analyse the reception of acoustic waves for hydrographic surveys
  • 1.5 Analyse the sonar equation for hydrographic surveys
  • 1.6 Apply quality control procedures to data acquisition and on-line processing to validate information according to workplace procedures
2 Use sonar systems
  • 2.1 Set up, deploy, operate and adjust underwater sonar systems according to manufacturer specifications and workplace procedures
  • 2.2 Interpret echo sounder returns through differentiation between return signals
  • 2.3 Calculate and report components in derived ranges according to workplace procedures
  • 2.4 Determine and analyse beams in relation to transducer settings
  • 2.5 Use phase and amplitude multibeam systems
  • 2.6 Analyse returns in the context of marine floor type, angle of incidence and backscatter from within the water column
  • 2.7 Determine sounding density and object detection capability as functions of system parameters
  • 2.8 Determine and use suitable mounting structure and location for transducers according to manufacturer instructions
  • 2.9 Determine and analyse error sources for phase and amplitude detection modes
3 Review and report acoustic results
  • 3.1 Review processes to ensure accuracy of information gathered, report anomalies and analyse solutions
  • 3.2 Complete acoustic reports and present to relevant personnel according to workplace procedures and industry standards
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State Code National Code Title Type
BGI9 CPP50121 Diploma of Surveying Qualification
BTT8 NWP50126 Diploma of Water Industry Operations Qualification
BEG3 NWP50118 Diploma of Water Industry Operations Qualification