1Land Navigation for GTL.ppt Last Revised: 16 July 2002 Land Navigation for Ground Team Leaders...

1Land Navigation for GTL.ppt Last Revised: 16 July 2002

Land Navigation for Ground Team Leaders

Developed as part of the National Emergency Services Curriculum Project


What are your responsibilities?

• Team Leaders are responsible for knowing the ins and outs of the maps of their area

• Team members only know basic field work normally


What are maps?

• A 2 dimensional representation of a 3 dimensional area.

• A tool

• A universal reference that teams can aid teams in coordination.


Longitude


Latitude


Latitude and Longitude Examples


Gridded Maps

• Read Right, then Up

• Typically metric examples, but are often used with overlays as well

• Give location with varying numerical accuracy.


Sample Map Grid


Four Digit Accuracy


Six Digit Accuracy


The CAP Grid System

54 55

8382A B

C D


Magnetic Variation & the Declination Diagram

• Compasses are affected by iron ore deposits throughout the earth, causing them to not point at the true north, but rather then magnetic north

• This variation is known, and maps show the corrections to be made in the form of the declination diagram


Lines of Magnetic Variation


Declination Diagrams


Map Scale


Sample Map Symbols


The 3 Dimensional Model


Using your Map with your Compass

• Field to Map

• Map to Field

• Triangulation

• Aiming Off

• The Polar Plot


Field to Map


Field to Map Continued


Map to Field


Map to Field Continued


Triangulation


Triangulation Continued


Aiming Off


Polar Plot


Land Navigation Tasks for Ground Team Leaders

• O-0204 Locate A Point On A Map Using Latitude And Longitude

• O-0205 Locate A Point On A Map Using The CAP Grid System

• O-0206 Locate A Point On A Map Using A Grid Coordinate Overlay

• O-0207 Locate A Point On A Map Using A Polar Plot From A Terrain Feature



• O-0208 Identify The Major Terrain Features On A Map

• O-0209 Identify Topographic Symbols On A Map

• O-0210 Determine Elevation On Map• O-0211 Measure Distance On A Map• O-0212 Convert Between Map And

Compass Azimuths



• O-0213 Determine And Plot An Azimuth On A Map

• O-0214 Determine Azimuths On A Map Using Two Points

• O-0215 Orient A Map To The Ground Using Terrain Association

• O-0216 Orient A Map To North Using A Compass



• O-0217 Locate Own Position On A Map Using Terrain Association

• O-0218 Move To A Point Using Linear Offset

• O-0219 Move From Point To Point In A Vehicle Using A Map

1Land Navigation for GTL.ppt Last Revised: 16 July 2002 Land Navigation for Ground Team Leaders...

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