Well I find AIS
a valuable tool for navigation
and the OpenCPN
handling of the data excellent. We have a raymarine
AIS650 transponder which displays information at the plotter and also connects to the laptop
via USB at the nav station. The CPA details on OpenCPN
are far superior, showing much clearer passing situations than on the plotter, so if its a close call we step inside to check on OpenCPN.
Another feature which I find excellent is being able to dislpay target tracks and setting the time for the tracks to display. We have ours set to 600 minutes, which gives us a clear indication of what other yachts are doing and have done, seeing their tack angles up channels and speeds gives us great data on comparing different yachts performance as well.
Currently we are sitting in Dominica
waiting to cross to Martinique
. The wind
is in the South and quite squally so were watching live satelite feeds as the cloud passes over NASA/MSFC Interactive GOES Data Selector
to time our departure, as well as whats going on with yachts offshore
we can see on OpenCPN.
As you can see the yacht selected is making 5.8K in about the right direction, hard on the wind
. The other is motoring at 4K on the rhumb line. We will likely leave in 30 mins and may have to tack to Martinique
. I just wanted to share some other uses for AIS
and OpenCPN that we find pretty valuable!