Got this app to track ships on the Detroit River we just got a condo beside. Its become a hobby for my wife and I to observe, learn about and photograph them. Ill use for traffic monitoring when we get the paddle boards out as well. I place entries in my calendar for incoming ships throughout the day and a built in alarm for when they are within range would be nice. Not all ships get "found" without repeated scrolling and zooming leading to occasional surprises. Well worth it for raising our maritime know how.
Bmmax about MarineTraffic - Ship Tracking, v3.4.1