Coastal Hazard Assessment · MCU25/0087

SandMap – Report of Survey for Sunshine Beach Profiles



                  Single beam echo sounder system (SBES)
           The CEE ECHO system from Cee Hydrosystems was used for the project. Transducer frequency
           was 200kHz, 9° beam width and a ping rate of 20hHz. Points were later thinned to
           approximately 1m. The system comprises of a transducer mounted to a custom bracket
           starboard side aft and a GNSS antenna mounted on a pole directly above the transducer. The
           SBES controller is installed in the box on the rear. A Panasonic Toughbook tablet is mounted
           at the steering position with CEE Connect software installed to enable full control over the
           SBES settings remotely. BeamworX hydrographic software is installed for all acquisition work.
           Specifications for the equipment can be found in Appendix D: Equipment Specifications.




                Figure 5: CEE ECHO Controller



                   Limiting sea conditions affecting survey quality
           Survey conditions ranged from 3 to 8 knot winds, predominantly from the south. Swell was
           approximately 1m with a slight sea.

                  Method used to determine least depths
           Depths were logged as soundings and displayed in BeamworX in real time along with the full
           echogram. Processing and cleaning was carried out in BeamworX Autoclean using full
           echogram information to determine true seabed. After data cleaning, points were thinned to
           approximately 1m intervals.




Rev. no.    Doc No.                                        Version Date          Doc Approver
  1         P0100-20251020                                 20/10/2025            Rod Tansley                        Page 10 of 20

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