Tapping on the tide or current icon opens that station.
Tapping on “Enter Location” button brings up a dialog allowing you to enter the latitude and longitude of a particular location, and the region surrounding that location will be displayed. The range of the region encompassed by the map is 1 degree by 2 degrees.
Tapping ‘GPS’ jumps you to your current location if that is available. For iPad 3G+WiFi models, this uses the built-in GPS to determine your location. For iPad Wi-Fi versions, it uses the less-accurate Wi-Fi triangulation method, which can fail if you’re not in range of any Wi-Fi hot spots, or the location of those hot spots is unknown. In this case the words ‘No Fix’ will appear in place of ‘GPS’.
Tapping ‘List’ rotates the Map view to the Table view for a list of all the stations that are contained in the Map.