dgps

Lines on the Charts. There are two kinds that we would like to point out. Firstly those lines that go straight up and
down (down and up if you prefer), and then there are those that go straight from right to left, (or left to right if you prefer).

These first ones are called Latitude and Longitude lines. Those lines that run from top to bottom of the chart are called Longitude (please note the are also Longitude lines if they run from bottom to top)….