For most boats this is optional, but still most boats have AIS [0] as part of their comms and have it enabled. There are also several websites (like [1]) where

For most boats this is optional, but still most boats have AIS [0] as part of their comms and have it enabled. There are also several websites (like [1]) where you can locate any boat (with AIS) in the world. [0] https://en.wikipedia.org/wiki/Automatic_identification_system https://en.wikipedia.org/wiki/Automatic_identification_syste... [1] https://www.marinetraffic.com/ https://www.marinetraffic.com/