I have tried a few, and can thoroughly recommend Software on Board from Digiboat
. I have been using it properly all the 2010 European season on a Samsung Netbook which is so power efficient that it can be left on all the time for coastal sailing, even on quite long passages. That way it logs
position, course speed and wind
continuously in a form that can be used in your Log, or processed using Excel into graphs etc.
A description of the installation
is on my website. Click Here
to go there.
My first full Log using the system (covering a cruise
from the Solent to Biscay France
, and a visit to the Corduan lighthouse on the Gironde) can be seen by clicking here
. This Link takes you to the summary page. The next link to the full Log (which is 60Mb as a pdf) takes time to load, so you really need a good broadband
connection to go there.