Follow up on the anchor alarm idea:
Precondition: This will only work, after significant overzoom is allowed and the track is thin enough to show the boat swinging at anchor.
The anchor should be a waypoint, probably called "Anchor"
The user should be able to set and move that waypoint by mouse, maybe arrow keys for fine tuning
The anchor alarm configuration should allow for setting a max radius (we don't manage (yet?) the own ship geometry, so this is the radius from the anchor to the gps
The display should show the anchor alarm circle so the user can adapt the center and radius to the swinging boat.
A sound file should be user selectable for the anchor alarm.
When the anchor alarm triggers, I would like opencpn
to put the ship in the center, scale to a chart with max detail, because I am probably dragging and need all help I can get.
Fugawi has a "set" button to allow the user to set the anchor = gps
position. This really is no good, when I am setting the anchor I don't have time to push this button in the Fugawi program. I usually wait until I see a part of a circle and guess the center of the circle. Then I have to tweak lat/lon for the waypoint, pretty crappy... We can do better!
Additional, nice to have feature:
For every 2nd tide change the track should change color or shade (less bright). This would allow us to see the new track on top of the old track (>=12h 25.2 min old = 1/2 lunar day). I had anchorages
with the anchor properly resetting after a tide change, but the anchor slowly moved in one direction, over days.
Screenshot below shows me at anchor, just went through a tide swing.