1. I dont know either.
2. Open the compass, select a tool and left click on the map and draw a line.
3. Waypoints are how you navigate the boat. Go to nav map and on one of the nav buttons is the waypoint tool. Hover you cursor over the icons and it will tell you what it does. With the waypoint button clicked just draw a line from your boat to a point on the map and left click if you want to set more waypoints or right click to set it as last waypoint.
You have to be surfaced to send a contact. If it warrants a reply it will take up to 24 hrs. to get. I hardly bother with the radio though.
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