Click on item of interest in left hand column.
Items correspond to OSSA questions.

Chapter IV                                    LAND NAVIGATION

Through written evaluation, the applicant will demonstrate the ability to:

w-1. Identify the different types of maps used in SAR. Click here for PowerPoint 
w-2. Identify the three primary coordinate systems. Click here for PowerPoint 
w-3. Identify a location on a map using Township, Range, and Section. Click here for PowerPoint 
w-4. Identify a location on a map using Latitude and Longitude (degrees, minutes, tenth of a minute).
w-4b. Identify the three formats of Latitude and Longitude
w-5. Identify a location on a map using UTM.
w-6. Identify the difference between True and Magnetic north.
w-7. Identify the relevance of Datum and coordinate systems.
w-8. Identify the advantages and limitations of GPS.
w-9. Identify the advantages of UTM.
w-10. The definition of declination.
w-11. Determine the elevation of a point on a map.
w-12. The coordinate system most commonly used by aircraft and maritime vessels.
w-13. How to relay Latitude / Longitude coordinates (degrees, minutes, tenth of a minute).
w-14. Determine the contour interval on a map with out a margin.

Through performance evaluation, the applicant will demonstrate the ability to:

p-1. Orient a map, compensating for declination.
p-2. Identify 10 common map symbols.
p-3. Use a scale to measure distance on a map.
p-4. Identify five elements of the legend on a topographic map.
p-5. Read contour lines on a topographic map and identify their relationship to physical objects on the ground.
p-5b. Understand contour labeling
p-5c. Know the rule of Vs
p-6. Identify the components of a compass.
p-7. Plot a bearing on a map.
p-8. Given a known bearing, travel in a straight line through wooded terrain for at least ¼ mile 
          with no more than plus or minus 4 degrees deviation.
p- 9. Plot their location using a map and compass.
p-10. Determine the bearing between two points and the back azimuth on a map.
p-11. Adjust for declination.
p-12. Follow a compass course of at least eight legs for a total distance of at least 1 mile.
p-13. Measure a given distance, using a known stride, while traveling uphill, downhill, and on level terrain.
p-14. Shoot a bearing.
p-15. Take a bearing.
p-16. Plot a UTM coordinate.
p-17. Find a UTM coordinate.
p-18. Determine the contour interval on a topographic map.
p-19. Determine the bearing between two points on a map.
p-20. Triangulate a position.
p-21. The ability to return on a back azimuth.
p-22. To navigate accurately around an obstacle blocking a path of travel.

Bonus Section

Bonus 01 Navigating by the seat of your pants

Download a Township & Range to Lat/Long converter.    When you get to URL, Scroll down to bottom of page for download.
                                                                                      Be warned, this is an excellent program but it is 1.9Mb large.

IV-B02 Finding the North Star (Polaris)