I like that it has an integrated GPS system, so you can see where all of your boats are at any given time in real-time or as historical data points from previous dates/times when available (which makes this great for tracking multiple vessels).
The interface could be improved by having more options within each window screen instead of requiring me to click around between screens just trying find what i'm looking for - but overall its pretty good! If you're interested in keeping track of boat movements during times of inclement weather then definitely consider using seawolf if they have coverage near wherever you want to use their service. We've been able help keep our fleet safe with ease knowing exactly where everyone was located throughout stormy days off shore.