How to Plot a GPS co-ordinates 101

Click FULLMAP to download scan image of map for exercise

Ok so you receive your map at the race start. Note the Degree, Minutes and Seconds readings:

Please click each image to enlarge for better detail>

26°oo S  28°00 E

Using a long ruler and a sharp pencil connect the lines to draw in the Latitude and Longitude Grid

Then Mark the “Minute” value for each row/column incrementing as you move along

Now Check the GPS Co-Ordinates that you have received.

CP1     26° 45, 912 S     28° 02, 789E   (Trig Beacon)

The 26 represents degrees South, the 45 Minutes and the ,912 a fraction of a Minute.

Find the respective row from the left margin:

Then using the grid with each block representing 0,100 find the correct position for 0,912

Then apply the same process for the 28° 02,789 E, Only this time you will be using the top margin to locate the correct column.

Using the grid, align the points where 0,912S and 0,789E intersect.

Move the Grid away and Plot CP1 (Trig Beacon)

Label the CP and description and then apply the same process to plot CP2 :

CP2     26° 46,496 S    28° 02,851    – Dam Wall

See easy peasy hey!!!

Ok champ, so lets try some more for good measure. And remember to always keep your plotting tool with you, you never know when there are CP’s to be plotted along the route.

CP3      26° 48,380S   28° 03,530E    Road Junction

CP4      26° 47,855 S   28° 02,450E     Island

CP5      26° 48,295 S   28° 01,273E      Windmill

CP6      26°46,730 S    28° 01,600E      River Bend (north bank)

CP7      26°47,241 S     28° 03,056E      School

CP8     26° 45,687S    28° 02,291E       Bridge

Click FULLMAP to download scan image of map for exercise