How can I get the DEPTH value of hull in Maxsurf Modeler?

Question

I want to get the Depth value of the vessel. How do I get it in Maxsurf Modeler? 
 Note: I tried setting a ridiculously large DWL value as Reference and obtaining the Immersed Depth value from Hydrostatics . But this is not providing the actual depth of the vessel.

James Clarkson · Accepted Answer

Ah - automation makes it trickier still! 
 One method would be to look at the control point locations, this may be indicative however it won't be accurate because: 
 - The control points don't lie on the surface 
 - The surfaces may be trimmed 
 
 Alternatively (and it would be slow) you could adjust the Frame of Reference DWL and calculate the hydrostatics. You could iterate on the lower bound at which the TpC is non-zero, and the upper bound where TpC is non-zero. The distance in between would be the hull depth. 
 
 Code to look at the difference between the highest and lowest CP would be: 
 ============== 
 Dim msApp As New BentleyModeler.Application 
 Sub CalculateDistanceBetweenHighestAndLowestCP() 
 tIn = VBA.Timer 
 a = GetDepth 
 tOut = VBA.Timer 
 Debug.Print a & " :: time taken = " & tOut - tIn

End Sub 
 
 Function GetDepth() As Double 
 Dim ss As Surface Dim rowCount As Long Dim colCount As Long Dim coord(1 To 3) As Double Dim hMax As Double Dim hMin As Double hMax = -10000 'initialise these variables to be far beyond the model hMin = 10000 For Each ss In msApp.Design.Surfaces 'if you only want the visible surfaces (to exclude SS etc then you could add a line about; 'If ss.Visible = True Then ss.ControlPointLimits rowCount, colCount For r = 1 To rowCount For c = 1 To colCount ss.GetControlPoint r, c, coord(1), coord(2), coord(3) If coord(3) > hMax Then hMax = coord(3) End If If coord(3) < hMin Then hMin = coord(3) End If Next Next Next Depth = hMax - hMin GetDepth = Depth 
 End Function

James Clarkson · Answer

Hi Michael, If you are after a rough measurement, I would read it from the cursor positions in the bottom left of the window. The last set of numbers is the distance (and x,y translations) from the last point where the cursor was clicked.

The other one you could use would be to use Data | Calculate Areas and look at the total depth value.

Looking at the 2 screenshots, my rough estimate was 4.787m, the calculated value was 4.757m, 30mm different without zooming in.

How can I get the DEPTH value of hull in Maxsurf Modeler?

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