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Coastal Hazard Assessment · MCU25/0087
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SandMap – Report of Survey for Sunshine Beach Profiles
Appendix C – Calibration checks
SBES Data vs RTK GNSS Pole Shots in overlap area
SBES to GNSS Data Comparison
GNSS Equipment Septentrio NR3 RTK Date 13/10/2025
SBES Equipment Cee Echo
MGA2020 (Zone 56) AHD
Profile Easting Northing AHD Easting Northing AHD dE dN dAHD
1 511493.1137 7080116.121 -1.3396 511491.973 7080113.037 -1.429 1.141 3.084 0.089
2 511438.865 7079618.787 -0.851 511438.8013 7079618.317 -0.8738 0.064 0.470 0.023
2 511442.679 7079617.756 -0.97 511442.4801 7079617.748 -0.9769 0.199 0.008 0.007
Nearest SBES Nearest GNSS
2 511446.374 7079616.645 -1.084 511446.4525 7079616.645 -1.0546 -0.079 0.000 -0.029
2 511449.642 7079615.707 -1.074 511449.7741 7079616.03 -1.105 -0.132 -0.323 0.031
3 511320.765 7079130.335 -1.188 511320.7845 7079131.305 -1.1746 -0.019 -0.970 -0.013
3 511324.493 7079130.566 -1.2 511324.4445 7079130.398 -1.1454 0.049 0.168 -0.055
Average Diff 0.175 0.348 0.008
Rev. Doc No. Version Doc Approver
no. Date
1 P0100-20251020 20/10/2025 Rod Tansley Page 18 of 20
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