We use a small Garmin chartplotter
for all our go tos, but always back up using an ipad. we also have apps on our android phones and laptops but only use them for planning at night or showing people what a nav app looks like. Still, it's always good to have built in redundancy and also independence from the boat battery
. The chartplotter
is very accurate (but so too is the ipad) and it has a 'guide to' which plots a course around the coast. It's not connected to the Autopilot
and this is not so bad if you are mostly sailing or inattentive
We use Flytomaps on the ipad, Navionics
on the android tablet and phone
, and OpenCPN
on the lappie. Quite unnecessary but I like the stuff. At night, I get out the lappie and check out the course for the next day. Check for reefs
, rocks, vhf
details, picture of port etc. This give me some knowledge of our cruise
and more importantly, details about the most dangerous part, going out and coming in to port.
Most days we motor
out of port, find the next port on the chartplotter, push the guide to button and sail away. When we get a couple hundred metres off course, we trim the autopilot
the chartplotter will guide us to the centre of the port entry but we are always in control of the boat ourselves. Coming into port we use the charplotter, ipad and the good old eyeball. This redunancy has saved our bacon a couple of times.