First set the View command to 2D Wireframe, then open the Tanks3D dialog.

When the main Tanks3D dialog opens use the Prev and Next buttons just above the OK button to scroll through the various tank and vessel styles required.

Once the required tank or vessel is selected, fill out the dimensional data required for that specific tank or vessel. Then select the OK button to place the shape.

You are now prompted to select the center base point of the tank or vessel. When placing a vessel you will also be prompted for a Rotation angle after the base point is selected.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10/11) and uninstall as you would any other application from your system.

You have 15-days to activate the software. When running in non-activated mode this dialog will only appear once the first time the program is executed in a new or existing drawing which indicates the number of Days Remaining before the program stops. Until you are ready to activate the software, you can run the software in the Non-Activated mode before it expires.

To activate the software, when you open a new or existing drawing and a dialog appears prompting you to press the "OK" button to Activate Now. This takes you to the SoftDraft Activation dialog showing your License Code and an edit box for you to enter the License Key.
 
To receive your License Key, click in the License Code edit box, then copy the License Code. To avoid mistakes, we suggest that you copy it from this dialog and paste it into an email, instead of entering it with the keyboard, then send it to support@softdraft.com
 
Please include the name the app was purchased under and the company name. After we receive the email we will send the License Key back, usually within 24 hours, for you to enter into the dialog. Copy the License Key from the email into the License Key edit box area of the Activation dialog, then click "OK" to close the dialog.

Not for use with Autodesk® AutoCAD LT® versions.