Just desk top fishing, and I am trying to find these coordinates on the 14830 chart that you can view on line, I see west sister but dont have any numbers on the map that show the 68 n 10 w, so my question is , what are the numbers for a starting point like west sister and from there how can I measure the distance from that position to others so as to show where you are and where to go. or is there a better chart available for this ?