Loading in 5 sec....

Plotting a bearing on your mapPowerPoint Presentation

Plotting a bearing on your map

- 715 Views
- Updated On :

Plotting a bearing on your map. Castle Rock Quad. You have just located the first point in an orienteering course. The clue indicates that the next location is 1.2km away on a bearing of 286° True. Your GPS indicates that you are currently at 586362m E 4113408m N.

Related searches for Plotting a bearing on your map

Download Presentation
## PowerPoint Slideshow about 'Plotting a bearing on your map' - Olivia

**An Image/Link below is provided (as is) to download presentation**

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Plotting a bearing on your map

Castle Rock

Quad

- You have just located the first point in an orienteering course. The clue indicates that the next location is 1.2km away on a bearing of 286° True. Your GPS indicates that you are currently at 586362m E 4113408m N.
- Use the Castle Rock Quad and follow along as we locate our next course point.

You can use your compassas a protractor

Plotting a bearing on your map

- You have just located the second point in an orienteering course. The clue indicates that the next location is 1.9km away on a bearing of 138° True. Your GPS indicates that you are currently at 585220m E 4113710m N.
- Use the Castle Rock Quad and follow along as we locate our next course point.

Plotting a Magnetic Bearing

- Standing at a known road junction, we sight a bearing to a nearby mountain top. We get 234° Magnetic as our bearing.
- The local declination is 15°E so we add 15° to 234° to get 249° True.

Plotting a Magnetic Bearing

- We set our compass to 249°
- We line the north-south parallel lines in the bezel up with a north-south line on the map.
- We move the compass until the edge is on the road junction.
- We draw the bearing line onto the map.

Getting a Bearing from the Map

- Place the edge of the compass along the desired line of travel.
- Rotate the bezel until it is lined up with true north.
- Read the true bearing
- Convert to magnetic by subtracting the 15° declination.

Compass Plotting Exercise

- Castle Rock USGS Quadrangle
- What is the true bearing from White Rock to the small pond just west of Zayante Road?
- What is the magnetic bearing?
- What water feature might you be looking at from White Rock at a bearing of 208° M?

Orienting your mapusing your compass

- Adjust the compass to look like the declination diagram.
- Set the compass down on the map with its edge parallel to a true north line.
- Rotate the map and compass until the magnetic needle is boxed.
- Don’t do this on a metal surface.

Download Presentation

Connecting to Server..