I need an assist on using an older
Raymarine E120 MFD on a
delivery.
The job will bring me by a several
reefs, I would like to avoid

. If it was a
Garmin chartplotter, one could set a waypoint at the reef and add a proximity
alarm. Then set waypoints for the
route well clear of the hazard. But being belt and suspenders kind of guy, if something messed-up, having a proximity
alarm for the reef, allows me to get some sleep while off watch. Looking at the Ray 120 instructions, I do not see the ability to set a proximity alarm for a waypoint not in the
route.
Tools available on board are the Ray E120 and
iNavx on my
iPad, or a
laptop with a
GPS puck running
OpenCpn.
Yes I know, I can set a waypoint an periodically check the angle to the WP and determine if the angle is less than the
safety angle. But that is not fully goof-proof. And yes knowing location is part of proper watch-keeping. But having some digital back-up is just prudent.
Anyone still running one of those old displays? Any thoughts on how to add a layer of
safety would be appreciated.
Thanks