Differences between IT and OT systems
Traditionally OT and IT have been separated, but with the internet, OT and IT are coming closer as historically stand-alone systems are becoming integrated.
Now imagine the Canal system is run by computers for efficiency. Old `Operator` roles automated and connected to a bigger picture via the internet. More efficient with complete control, less physical. However, should one element of the system break, it may have impact on all the other elements. The analogy within shipping is that in a fully integrated bridge/engine/cargo management system, one element breaking may affect others. Now add in the idea of almost unlimited crew both onboard and ashore have the ability to control any of those smaller elements.
Cyber awareness is not just about the external hacker, it is also about the internal operator who may not be aware of the implications of their actions within a large integrated system.