Basic Navigation - Air Cadet Central

Basic Navigation - Air Cadet Central

Basic Navigation Lecture 2 ACP32 Vol2 Basic Navigation By the end of this lecture you should

know: The anatomy of a typical compass How to set a map with a compass Taking a bearing Resection

Anatomy of Compass Anatomy of Compass Magnetic Variation The needle of the compass aligns with the earths magnetic field.

If your compass is near large amounts of metal or electrical equipment you will not get a true magnetic reading. Setting a Map with a Compass Ideal in reduced visibility or low-feature environments. 1, Turn the capsule until the GMA is set against the

direction arrow. 2, Place the compass on the map with the edge along a North-South grid line. 3, Turn BOTH the map and the compass until the needle aligns in the orienting arrow in the capsule

The map is now set! Taking a Bearing Not a Bear Ring, a Bearing or heading! Taking a Bearing Use this to stay on track and provide a hand held

travel aid without the need to keep the map set and in your face. 1, Place the edge of the compass on the map between your position and your objective.

Taking a Bearing 2, Turn the capsule so the orienting lines align with the North-South grid lines. 3, Turn the capsule again to add the GMA. (GRID to MAG, ADD)

Taking a Bearing 4, Hold the compass in front of you and turn until the needle falls in the orienting arrow. The direction of travel arrow now point at the objective. Taking a Bearing You can also use bearings to check what a

feature is. 1, Point the direction of travel arrow at the feature. 2, Turn the capsule until the needle aligns with the orienting arrow. 3, Turn the capsule again to deduct the GMA (MAG to GRID, GET RID).

Taking a Bearing 4, Place the compass on the map, edge on your position. 5, Pivot the compass around your position until the orienting lines run North-South. The edge of the compass will now align your position with the feature on your map

Resection Used to get your bearings and check exactly where you are. Repeat the previous steps for identifying a feature with a bearing at least 3 times on three different features. Where these lines intersect

is your exact position.

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