Fishing vessels can “go dark” by turning off Automatic Identification System (AIS) transponders that broadcast their location to satellites and terrestrial receivers.
What they do during those invisible hours has long been a mystery.
New research funded in part by NOAA’s Office of Law Enforcement analyzes where, when, and potentially why vessels disable their AIS broadcasts.
“This is the first time scientists have been able to quantify the global footprint and scale of AIS disabling and make...
https://maritime-professionals.com/what-does-it-mean-when-fishing-boats-go-dark/