We have a handheld depth sounder
and a DCS handheld VHF
. When I want to scout a channel or reef or other, I just go out in the dinghy
, find the points I want with the depthsounder, and use the DSC
"Position Report" feature to send waypoints back to the ship's chartplotter
. When I return to the ship, the chartplotter
has the path of waypoints all plotted out and ready to use.
I don't think the OP is talking about charts
with depths marked on them. He is talking about those areas that either change in time frequently, or are remote/small enough to not have been surveyed for general navigation
use. I also do not know of a Raymarine
or other device that does what the OP is asking about.