Land Navigation Flashcards
SAMC Chapter 4
What must be done before you can plot an azimuth on a map?
You must orient the map using a compass to ensure it is aligned correctly with the ground features.
What is the fastest and most accurate way to orient the map?
The fastest and most accurate way is to use the terrain association method, which involves matching map features to those visible in the landscape.
Give two rules to always use when using a compass.
Always hold the compass level to ensure accurate readings.
Avoid proximity to metal objects or electrical sources, which can affect the compass reading.
Can the lensatic compass be used at night?
Yes, the lensatic compass can be used at night, utilizing the luminous sighting slots for navigation.
Where does the arrow on a compass always point?
The arrow on a compass always points to magnetic north.
How many sights does a compass have?
the front sight and the rear sight.
How many degrees are there in a circle?
There are 360 degrees in a circle.
What kind of dial does a compass have?
floating dial
What is meant by the UTM grid system?
The UTM (Universal Transverse Mercator) grid system. A systematic way to identify locations on a map
What is elevation?
Elevation refers to the height above sea level of a specific point on the Earth’s surface.
What is a topographic map?
A topographic map represents the terrain of an area, showing physical features such as elevation, landforms, and vegetation.
Define relief?
Relief is the variation in elevation and slope in a specific area, representing the landscape’s ups and downs.
What are military symbols?
Military symbols are standardized graphical representations used on maps to convey information about units, equipment, and operations.
What is meant by declination?
Declination is the angular difference between magnetic north and true north, which can affect navigation accuracy.
What is vertical distance?
Vertical distance refers to the height difference between two points on the ground, typically measured in feet or meters.
If a map is to be effective, what information is to be consulted?
map legend, scale, and declination diagram
Where is the legend found on a map?
lower margin of the map
How is a lensatic compass held?
A lensatic compass should be held with the cover forming a straight edge with the base and the rear sight extended.
What is the outside border called?
The outside border of a map is called the neatline.
At an easterly GM angle, how do you convert from magnetic to grid?
subtract the GM angle from the magnetic azimuth.
What is the fastest way to orient you?
Using the Centerhold Technique
What are the three norths?
true north, magnetic north, and grid north
If you are traveling on an azimuth of 90 degrees, what direction are you traveling?
east
What is your pace count? When did you last verify it?
number of steps taken to cover a specific distance (usually 100 meters).
