Haven't read everything here, but I have an interesting story how iPhone
was quite useful for navigation
So last year my father and couple of his friends decided to cross Baltic
Sea. We live in Lithuania, around Klaipeda. They decided to go to Kalmar island, Sweden
Usually it's me who preloads our Garmin
Gpsmap 520s with charts. I have done countless of updates to our (and our friends) SD cards. I was pretty sure that I have uploaded the latest and largest version of maps, that covers the whole Baltic
Sea. Obviously I haven't checked the coverage.
Midway of their journey, they found out that the chart is incomplete. They panicked for a bit, but quickly remembered having handheld car satnav with whole europe
maps, which can be used in water
. Moreover, my father remembered I've preloaded his iPhone
app (as probably none of them knew or cared how to use the paper charts). They found their way, however they managed to get so close to the rocks to trigger sounder alarm
(set for 1.6 meter, while our draft
is 1.4 as we mostly sail around shallow waters).
The rest went pretty, well they visited the place and so on.