Using the ParaLock makes plotting GPS positions really straightforward. What's more its compact and particularly suited for modern small chart tables. Just use the big black knob to lock it at the latitude or longitude scale position, slide it down a chart grid line and mark a position. Used in reverse it's a quick and easy way to work out way points from a chart.
David adds; 'Feedback from thousands of navigators in the US, UK and NZ has been very positive. Many boaters use all-electronics navigation but its a good idea to have a working knowledge of the older skills. Sometimes salt water and electronics don’t mix well!'