Fun app for casual boat watching

Were staying at a beach house on the Chesapeake Bay and I got the paid version of this app to learn about the big ships we see on the horizon. I agree that the free version is unusable and ruined by the ads. But the paid version is pretty fun for casual ship watching. Sometimes it displays very little information for a particular ship, but I think thats more a function of the maritime registration process rather than the app.

NW000000 about Ship Finder, v8.0.1