The backstory behind the data gathering to make the map is a good read. They have put a lot of effort to cleanse and understand the raw data. There are plenty o

The backstory behind the data gathering to make the map is a good read. They have put a lot of effort to cleanse and understand the raw data. There are plenty of nice articles on the what and why: http://globalfishingwatch.org/explainers/data/what-does-an-ais-message-look-like-anyway/ http://globalfishingwatch.org/explainers/data/what-does-an-a...