When conducting a hydrographic survey, the conventional method used to calibrate a tide gauge is to use a tide pole. The big disadvantage of doing it this way is that it usually requires someone to be on site for up to 26 hours, making it a labour intensive and expensive process.

iXblue has a much more efficient system for calibrating a tide gauge. Senior Surveyor Owen Friedlieb demonstrates the process, which involves deploying a GPS receiver inside a buoy, and explains the major benefits of doing it this way.

David Donohue

As Managing Director David's role is to ensure clients' surveys are undertaken with precision and to meet budgets, schedules and relevant survey standards. His particular driving passion is innovation and process improvement.

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