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Hydrographic Survey

Navigate diverse environments above and below the waterline

Our specialised hydrographic survey services can navigate diverse environments, including near shore, riverine, and closed waters, with versatile platforms specifically designed to deliver survey-grade data. Our expertise extends to challenging environments such as caustic tailings dams, where data gathered directly supports critical mine planning.  

Our hydrographic survey technology 

Utilising single, multi-beam and side scan sonar sensors, paired with adaptable platforms from manned motor vessels to autonomous catamarans and even UAV, such versatility ensures tailored solutions match site constraints and client objectives efficiently and effectively. 

Vision Surveys (QLD) has the capability to combine sonar data with other sensor data such as UAV LiDAR, Mobile Laser Scanning (MLS) and photogrammetry to provide clients a comprehensive solution for their entire project’s spatial data requirements for both above and below the waterline. 

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Our commitment to accuracy and safety  

While accurate data capture is essential, the true value depends on delivering concise and usable data. Vision Surveys (QLD)'s  advanced 3D modelling and analysis tools provide critical insights, particularly for projects involving sediment dynamics, remaining capacity assessment and environmental monitoring. Committed to safety, precision and environmental management, Vision enables informed decision making for our varied clients across Australia.  

Our hydrographic surveying services 

We excel in providing accurate representations for informed decision-making. Our comprehensive services ensure precise datasets for a holistic understanding of aquatic environments for a range of hydrographic surveying services including:

  • 3D modelling of coastal, riverbeds and closed water bodies  

  • Change monitoring over time 

  • Capacity surveys 

  • Data fusion of Sonar, LiDAR, MLS, and similar datasets  


Your vision our goal

Let us bring your vision to life

Hydrographic survey FAQs

What is the difference between Australian height Datum and Port Datum, and why is it so important?  

The Australian Height Datum (AHD) is a reference point for heights above sea level across Australia. Port Datum refers to the sea level reference used in specific port areas. The difference lies in their origin points and local variations due to tidal influences. This distinction is crucial for accurate elevation measurements in land and marine engineering, ensuring compatibility between land-based and maritime projects while accounting for regional tidal variations. 

What is the difference between a single beam, multi beam and side scan sonar? 

Single-beam sonar measures water depth along a single line, suitable for simple surveys. Multi-beam sonar uses multiple beams to provide broader coverage and detailed seafloor mapping. Side-scan sonar produces high-resolution images of the seafloor, capturing intricate features and objects using beams that extend to the sides, making it ideal for detailed underwater imaging and object detection. 

How do you combine sonar and LiDAR information?  

Sonar and LiDAR data fusion involves integrating underwater Sonar data with above-water LiDAR data. Using common survey datums, our advanced software aligns the datasets into a single model. Combined information offers comprehensive 3D mapping of both underwater and terrestrial environments, valuable for coastal zone management, environmental assessments, and infrastructure projects requiring complete above-and-below-waterline understanding. Careful planning is also required in intertidal zones to capture the overlap between the two sensor platforms. 

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