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Panel

Right click the Multibeam folder under 1.Survey Data, select Gridding Multibeam Data... and the gridding menu will pop up.

Multibeam gridding menu
Keep Weighted Average as the gridding algorithm.
Change X increment to 2.5 and keep the Use YInc=XInc option.
In the Algorithm Parameters tab set Search radius to 5 and change verify that the Unit to Metric is set to Grid node(s).
Keep the Weight function as 1/D.
Select all the survey lines (click one and use ctrl + a).
Click Execute and the gridding process will start.
When the gridding has finished a report window will pop up, showing the details of the gridding process
Click OK.

The grid is saved as Surface_WeightedAverage in the 1. Survey Data / Multibeam folder.

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Panel

Select the Chart commands tab in the Seafloor Main Menu.
Click Gridding Chart.
Keep Weighted Average as the gridding algorithm.
Change X increment to 2.5 and keep the Use YInc=XInc option.
In the Algorithm Parameters tab set Search radius to 5 and change verify that the Unit to Metric is set to Grid node(s).
Keep the Weight function as 1/D.
Check the Filter input points box.
Click the Filter and re-grid tab.
Check the Save filtered points box, set Filter type to Standard deviation and set Shallow factor and Deep factor to 3.
Select all the SubChart-x (click first and use shift + click on last).
Click Execute and the gridding process will start.

When the gridding has finished, each sub chart folder will have three new datasets: Seafloor, Soundings_Accepted and Soundings_Rejected.

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