ROTC: Map Reading & Land Nav

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Created by
bri

Cards (9)

  • WHY MAP READING AND LAND NAVIGATION IS IMPORTANT IN THE MILITARY?
    • Basic Requirements of an individual Soldiers.
    • a map can give a accurate information.
    • it becomes more and more necessary to rely upon maps.
    • by necessity, planning must be done on maps.
  • MAP
    -  A graphic representation of a portion of the earth's surface drawn to scale, as seen from above. 
    -  uses colors, symbols, and labels to represent features found on the ground.
  • SECURITY - Maps are documents that mustn't fall into unauthorized hands.
    CARE - Protect from water, mud & tearing.
    How to Read Map - "Read Right Up"
    How to orient map? – It's oriented in horizontal position w each north & south corresponding to the north & south on the ground.
    PURPOSE - PROVIDES INFO ON EXISTENCE, LOCATION, DISTANCES
    CATEGORIES :
    A.  SCALE - the ratio / fraction between the distance on a map & the corresponding distance on the surface of the earth.
    B.   TYPE - categorized according to its purpose / the manner it was made. Maps produced by gov agencies or civilian entities.
  • CATEGORIES:
    SCALE
    1. SMALL SCALE  - 1:1,000,000 & SMALLER
    used for general planning and for strategic studies 
    standard SMALL-scale map is 1:1,000,000.
    2. MEDIUM SCALE – 1:75,000-1:1,000,000
    used for  operational planning 
    standard medium-scale map is 1:250,000.
    3. LARGE SCALE  - 1:75,000  & LARGER
    used for tactical, administrative, and logistical planning  
    STANDARD LARGE-SCALE IS 1:50,000
  • BY TYPE:
    1. PLANIMETRIC aka line map
    2. TOPOGRAPHIC
    3.  PHOTOMAP
    4.  JOINT OPERATIONS GRAPHIC
    5.  PHOTOMOSAIC
    6.  TERRAIN MODEL
    7.  MILITARY CITY MAPS
    8.  SPECIAL MAPS
    • PLANIMETRIC MAP - Presents only the horizontal positions for the features represented. 
    • TOPOGRAPHIC MAP - Portrays terrain features in a measurable way (usually thru contour lines); Shows both horizontal & vertical positions of the features represented.
    • PHOTOMAP - A reproduction of an aerial photograph upon which grid lines, marginal data, place names, route numbers, important elevations, boundaries, and approximate scale and direction have been added. 
  • > JOINT OPERATIONS GRAPHICS - Maps  based on the format of standard 1:250,000 medium-scale military topographic maps that contain additional info needed in joint air-ground operations 
    > TERRAIN MODEL - A scale model of the terrain showing features, and in large-scale models showing industrial and cultural shapes; provides a means for visualizing the terrain for planning or indoctrination purposes and for briefing operations.
    • PHOTOMOSAIC - An assembly of aerial photographs
    • MILITARY CITY MAP - A topographic map (usually at 1:12,550 scale, sometimes up to 1:5,000), showing the details of a city
    • SPECIAL MAPS - for special purposes like trafficability, communications, and assault maps 
  • additional maps:
    1. Plastic relief photomap – A photomap printed in plastic and molded into a three dimensional form.
    2. Plastic relief map – a topographic map printed in plastic and molded into a three-dimensional form.
    Marginal Information and Symbols
    before it is placed into operation the user must read the instructions placed around the edge of the map and are known as the marginal information.