Great app

I use this app when I go open water rowing.
The iPhone is in a waterproof pouch in a storage compartment of the shell( boat). After the row, my track is displayed on the beautiful noaa map.
I hope that a companion apple watch app will be offered so that the iPhone app can be controlled from the wrist.
This is a wonderful app.

Len from tampa about iSailGPS : NOAA USA RNC Charts