Great way to track and identify marine traffic
I originally got this app in order to track a group of high school students of mine who were on a weeklong educational voyage. The app allowed me to track them for the entire time that they were at sea. In addition, and as a pleasant and unexpected surprise, I found myself tracking other ships and identifying other marine traffic that I would see anytime I was near the ocean or around the Great Lakes. Its educational, informative, and a lot of fun.
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MarineTraffic - Ship Tracking