As a Master Mariner and private pilot, I will point out that AIS is used with caution in commercial shipping due to it's pitfalls and limitations, you could possibly even consider it a tertiary data source. It is not intended for collision avoidance, it primarily exists for state authorities and vessel traffic services to identify shipping movements. Regulations also dictate a specific set of actions in response to a collision situation, whereby VHF/ Radio coordination does not figure into that.
It is important with technology to fully understand the principles behind it to appreciate it's strengths and weaknesses in everyday use. In my type of work offshore where position accuracy is critical (the consequences of failure by a few metres are far reaching, think Deepwater Horizon/ Gulf of Mexico), satellite derived data must only be weighed at 50% with at least 2 alternative accurate forms of redundancy in position keeping.