I use the WatchMate anchor watch function on my IPhone. It gets data via a Wi-Fi connection to the Vesper Marine AIS transponder. It’s pretty good, and doesn’t use up battery power. That AIS unit also can be hooked to its own audible alarm, but I didn’t do that because I get the same thing on my phone.
I also place a mark on the chartplotter where the anchor was dropped and a second mark where my boat ends up after setting the anchor. It’s not really necessary, but it is handy for watching the movement of the boat over the first 20 minutes or so.
I do take bearings on a few landmarks just for backup
I also place a mark on the chartplotter where the anchor was dropped and a second mark where my boat ends up after setting the anchor. It’s not really necessary, but it is handy for watching the movement of the boat over the first 20 minutes or so.
I do take bearings on a few landmarks just for backup