SkyTruth Fishing Watch. https://www.skytruth.org/mapping-global-fishing/

gCaptain reports,

Fishing vessels with crews of forced laborers behave in systematically different ways to the rest of the global fleet, according to a study purporting to be the first to remotely identify vessels potentially engaged in modern slavery.

Using satellite data, machine learning and on-the-ground expertise from human rights practitioners, U.S. researchers found up to 26% of about 16,000 industrial fishing vessels analyzed were at high risk of using forced labor.

It is not unlikely that the same vessels that engage in this practice, also violate other norms including Illegal, Unregulated, and Unreported fishing.

Not sure how the Coast Guard should go about attacking this international problem, but it is something to consider. Certainly vessels flagged as meeting these characteristics should attract our interest.