Advanced design software for mastering ship geometry

 Menu bar/Tools/Tank Calibration 

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Purpose:

           Automatically calibrates current ship’s tanks and creates for each tank: 

              -       Tank location / presentation plan.

              -       Tank calibration diagram showing volume, weight, LCG, VCG, VCGt, FS area and FSM curves according to sounding / ullage. 

              -       Tank calibration table displaying volume, weight, LCG, TCG, VCG, VCGt, FS area and FSM. 

              -       Tank Pipe Data table (if current tank contains a sounding pipe) displaying tank and pipe’s sounding / ullages, volumes, weights, and corresponding pipe coordinates. 

            It is recalled that when tanks contain a sounding pipe (i.e. an affiliated line in the ‘Sounding Pipe Layer’ declared on [Ship] tab's [Hydro] page), the reports automatically include the corresponding sounding pipe data and the ‘Sounding Tables’ function detailed below becomes usable (see FAQ for more details).

             Tank Pipe Affiliation

 

Inputs:

    The following dialog box pops up when the function is selected:

 

           Tank Calibration DB

        

             The ‘Step’ input field allows entering the free surface increment, provided that heel and trim are fixed to 0°.  .

             The ‘F.S. Incrementation’ selector allows selecting whether table’s tank fillings are displayed from 0% to 100% or from 100% to 0%.

             The input field located in the  ‘Document Name’ frame allows naming the 2D folder in which the reports will be created.

             Finally, when the input data are set:

             The [OK] button can be clicked for starting the tank calibration.

             The [Help] button allows displaying the online help (Internet access necessary).

             The [Cancel] button allows cancelling the calculation.

 

 Outputs:

            After clicking on the [OK] button, a 2D folder is created in the [2D] tab, containing a 'General' tanks presentation folder and an individual folder per tank, containing its calibration reports:

            1: General Tank Presentation:

For further details on controlling the tank presentation report's  layout, see the corresponding FAQ item.

Tank Presentation Perspective

When a 'Capacity Layout' has been also defined on [Ship] tab's [Capacity Layout] page (see FAQ item), a user-defined tank presentation plan is automatically added:

Tank Presentation Plan

            2: Tank Location / Presentation Plan (for each tank)

Tank Calibration Report 1

 

           3: Tank Calibration Diagram (for each tank):

Tank Calibration Report 2

 

            4: Tank Calibration Table (for each tank):

Tank Calibration Report 3

           

            5: Tank Pipe Data Table (for each tank):

Tank Calibration Report 4

 

Limitations:

            - For obvious reasons, this function only operates when tanks are included in ship’s model.

            - Tank pipes must be affiliated to the tanks if you want to calculate the tank pipe data.

            - Tank’s permeability and density must be set to realistic values.

 

Typical use:

            Calibrating ship’s tanks for designer’s purpose  (use ‘/Tools/Sounding Tables’ for getting ship tank’s onboard data).

 

Example:

            Open the ‘Example Ship.m2a’ file and double click on ‘Damage 100% Supply’ in the 3D browser to select this virtual ship:

               - Select "/Curve/Line/Line" in the menu bar.

               - Type '12.9,0.1,0.1[Return]' to input tank pipe's bottom.

               - Type '12.9,0.1,1.2[Return]' to input tank pipe's top.

               - Check the 'Tank Pipe Layer' on [Ship] tab's [ Hydro] page.

               - Click on the [Data] tab to display the corresponding page.

               - Rename the created line 'GO PS Tank Pipe' in the 3D browser

               - Set 'GO PS Tank Pipe' line's layer to the current  'Tank Pipe Layer'.

               - Drag the 'GO PS Tank Pipe' line with the 3D browser to drop it in the 'GO PS' tank.

               - Select '/Tools/Tank Calibration' and validate directly.

               - Compare the results obtained with and without affiliating a tank pipe.

               - Compare these results with the 'Sounding Tables' results.