Good not great
Good for general vicinity (within 100 miles, maybe) but VERY difficult to zoom in for more precise location, particularly for the west coast of North America, on up to Alaska. Map does not come up automatically very well. The "pan" to the west using a finger swipe on the map automatically resets to east coast of Russia if you go too far. Then you have to start over. Happens on both the iPad and the iPhone so I know its not just my device. Frustrating. The regular website is MUCH better. This app is not worth the $2.99, yet.
Gaishea2012 about
VesselFinder Pro