Boat Watch 4+

I purchased this app for my Mac to track a specific vehicle-carrying ship (MIGNON) from Germany to Halifax to New Jersey in order to determine the arrrival date of my new car into port. Unfortunately the positional data was not being maintained for periods of days. Out of frustration I purchased another app for my iPhone to find that AIS updates were being broadcast hourly with the revised plot of the MIGNON’s position. My Mac is up to date with OS-X El Capitan 10.11.6 and current Java adapters. I also noted, (perhaps for addtional developer feedback) that the vessel infomation pop-up obscures the vessel map location, and erases the track history. This app needs a good deal of human factors engineering along with a proper database back-end.

I'd give zero stars if possible. I'm at the Corpus Christi shipping channel and Boat Watch shows no tanker ships in the channel and none outside the channel waiting to come in. My other ship tracking apps on my phone show one tanker under way in the channel and seven tankers and one cargo ship outside the channel at anchor and two tankers under way headed toward the channel. very poor application

As a sailboat owner in Southern California it’s nice to know where the bigger ships will be ahead of time. This works well. Unlike others I have no trouble zooming down to a detailed-enough level.