QUESTIONS AND ANSWERS SURE A+
✔✔TWO-POINT RESECTION - ✔✔No linear feat
Orient map
Undercut two or three known distant locations
Measure magnetic azimuth
Convert magnetic azimuth to grid az
Convert grid az to back az
Repeat steps for second
Intersection is location
✔✔Dead Reckoning - ✔✔relying solely on your compass for direction
✔✔Terrain association - ✔✔using the surrounding terrain to guide you along your way
, ✔✔Terrain Association Factors - ✔✔• CONTOUR LINES: They provide information on
the amount of detail shown on landforms. Contour lines are extremely important during
the planning stage of any operation.
• MAP DATE: The information the map provides is only as good as the date it was
compiled. The older a map is, the more skeptical a planner needs to be about its
accuracy.
• MAP REGION: Knowing the region the map covers will provide a clearer idea of what
you can expect to see in the real world and on the map.
• SEASON: The changing seasons will affect what you see in the real world and your
ability to match what you see to the map.
✔✔Deliberate offset - ✔✔a planned magnetic deviation to the right or left of an azimuth
to an objective. Use it when the objective is located along or in the vicinity of a linear
feature such as a road, or a stream.
-Because of errors in the compass or in map reading, the linear feature may be reached
without knowing whether the objective lies to the right or left.
-A deliberate offset informs the navigator of the direction to travel upon reaching the
linear feature.
✔✔A line checkpoint is a - ✔✔natural or manmade linear feature that crosses your line
of march.
The advantages of line checkpoints are:
-They are usually easy to identify upon arrival.
-Because they stretch across your route, you are certain to hit it, even if you stray.
The disadvantages of line checkpoints are:
-You may not know your exact location on that feature unless you perform a resection
or inspection.
-They can be confused with features that are similar to them.
✔✔Point checkpoints are - ✔✔specific objects or terrain features that, if located and
properly identified, positively indicate your exact location.
The advantage of a point checkpoint is that it indicates precisely where you are,
allowing you to correct any mistakes in both distance and direction.
The disadvantages of point checkpoints are:
-Because point checkpoints cover just a small area on the ground, you may miss them.