The rules need to create a reliable financial incentive, or they will be routinely ignored. The easiest way to accomplish this would be to utilize existing AIS

The rules need to create a reliable financial incentive, or they will be routinely ignored. The easiest way to accomplish this would be to utilize existing AIS signals (https://en.wikipedia.org/wiki/Automatic_identification_system https://en.wikipedia.org/wiki/Automatic_identification_syste...). But doing so could create an incentive for captains to switch off their transponders, which would lead to safety issues.