GEOBASE Training

Equip an individual with the theoretical and practical knowledge required to plan, undertake and report a vessel dimensional control survey.
The course contents is aligned to guidance from professional surveying bodies and covers traditional land and hydrographic surveying which underpins the conduct of a vessel dimensional control survey as well as, but not limited to, practices in the offshore energy industry.

The course will;

Introduce the theory of hydrographic and geophysical surveying and the requirements for accurate vessel dimension data.
Introduce accuracy standards used in hydrographic surveying and how the dimensional control survey contributes to reducing the error budget.
Introduce the theory of land surveying and how land surveying practices are translated into the dimensional control survey.
Introduce the range of survey sensors available for performing hydrographic surveys and how to deal with these during a dimensional control survey.
Introduce the concepts of vessel design and how this is important when planning hydrographic survey sensor installation and the dimensional control survey.
Train somebody to review a dimensional control specification and plan how the survey will be undertaken
Train somebody to utilise total station and GNSS technology to conduct the vessel dimension control survey including setting up both a local and vessel reference frame on a static and floating vessel, observing offsets and capturing data for the calibration of attitude and heading sensors
Train somebody how to process dimensional control data using software packages such as Microsoft excel, AutoCAD and GEOBASE
Introduce the expected formats for dimensional control survey reporting.

On completing this course students will be able to:
Explain the importance of dimensional control surveying on offshore survey vessels and other offshore survey platforms (ROV, Trenchers)
Plan a dimensional control survey on both a floating and static vessel including the definition of vessel and local reference frames
Explain coordinate and rotation conventions and how these are used and applied during a dimensional control survey
Use total station technology to install a control network on a vessel and observe points within that network to millimetric accuracy
Use total station and GNSS technology to collect data for the calibration of vessel based attitude and heading sensors
Use relevant software for the processing of total station data including network adjustments and least squares analysis
Process and present dimensional control data so it can be successfully applied and used within the vessel survey software
Conduct total station and GNSS verification procedures to confirm the accuracy of dimensional control data and that data is applied correctly; within the vessel survey software.
Prepare a comprehensive report of survey containing relevant and easy to understand data.