Quote Originally Posted by OUdaveguy98 View Post
Hi everyone. New to the community and trying to quickly get up to speed on CC3. I'm wondering if anyone knows how to quickly create nav lines on CC3 and how do I get them to appear over top the sea, but run underneath my land masses. Thanks in advance!
There are two main kinds of systematic line on a map, rhumb lines and graticules. Rhumb lines are lines of constant bearing, which means if you follow a bearing on a compass, you will trace out a rhumb line. If the map is large scale(zoomed in) or if it's in the Mercator projection, they will be straight lines. Rhumb lines and Mercator were used for dead reckoning navigation. Systematic ones look sort of like a cat's cradle or a bit like a spider web. They can also look like a set of star bursts distributed over the map.

Graticules show a coordinate system on the map, usually latitude and longitude. Depending on the projection and coordinate system you are using, they will appear as a grid of some sort though the shape varies.

http://en.m.wikipedia.org/wiki/Rhumb_line
http://en.m.wikipedia.org/wiki/Mercator_projection
http://en.m.wikipedia.org/wiki/Geogr...rdinate_system