To change the icon assigned to a Marker in the Navionics mobile apps, perform the following steps.
1. Launch the app. 2. Tap on Menu > Markers. 3. Tap on the Marker desired, taking you to the Marker's location on the map. 4. Tap the information icon to the right of the Marker's name. 5. Tap the preferred icon from the choices at the bottom of the page.
The icon can also be selected when you are physically creating the Marker initially.