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151 search results for: ais


AIS Ship Tracking Data Shows False Vessel Tracks Circling Above Point Reyes, Near San Francisco

Analysis from SkyTruth and Global Fishing Watch shows ship tracks jumping thousands of miles from their true locations.

In December of 2019 SkyTruth reported on a number of locations on the Chinese coast (mostly oil terminals) where ship tracking positions from the automatic identification system (AIS) became scrambled as soon as ships approached within a few miles of a point on shore. Following the findings last year on the Chinese coast, analyst Bjorn Bergman began looking globally for any similar patterns in AIS tracking data around the world. While he hasn’t found the precise pattern observed at the Chinese oil terminals outside of China, he has found a somewhat different false AIS broadcast pattern which appears concentrated above Point Reyes northwest of San Francisco, California. Could this reflect an intentional disruption of the underlying global positioning system that AIS relies on, or is there some other explanation for this pattern?


SkyTruth Board Member Mary Anne Hitt: Activist Extraordinaire

Mary Anne Hitt has led Sierra Club’s Beyond Coal Campaign to extraordinary national success. But she honed her skills in Appalachia, with a little help from SkyTruth.

You might say Mary Anne Hitt has Appalachian activism in her blood. When she was growing up in Gatlinburg, Tennessee her father was Chief Scientist at Great Smoky Mountains National Park. Back then, acid rain was decimating high elevation forests in the East, fueled by pollution from coal-fired power plants. Her father watched as iconic places in the park turned into forests of skeleton trees. Today, Mary Anne is National Director of Campaigns for the Sierra Club; and she also serves on SkyTruth’s board of directors.


Bilge Dumping at Sea: What are SkyTruth and others doing about it?

With free public monitoring services and the help of watchdogs globally, bilge dumping can come to an end. SkyTruth’s new project Cerulean is one solution.

Throughout this multi-part series on global bilge dumping, we have revealed how SkyTruth has identified oily pollution from ocean-going vessels, the range of harmful effects to coastal communities and marine ecosystems, and the challenges in prosecuting ocean offenders. We now address the future. What’s next?