Historical satellite data from the Nimbus-7 mission used this extension for sensor information.
Used by engineering software (like Tank-v4) to model technical parameters for industrial tanks. Download CBP TNK zip
If you tell me you're using or the specific error you're seeing, I can help you troubleshoot the file! TNK File Extension - What is it? How to open a TNK file? Historical satellite data from the Nimbus-7 mission used