SAR Fundamentals/Compass practical and pacing

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* Compasses
* Compasses
-
== Outline ==
+
== Lesson plan ==
Material Covered:
Material Covered:
-
Navigation - section 3 - compass use and exercise
+
* Navigation - section 3 - compass use and exercise
Objective:
Objective:
-
* know cardinal directions
+
* know cardinal directions
-
* know compass degrees
+
* know compass degrees
-
* know what affects a compass
+
* know what affects a compass
-
* magnetic declination
+
* magnetic declination
-
* shooting a bearing with a compass
+
* shooting a bearing with a compass
-
* pacing
+
* pacing
-
* exercises: bearings
+
* exercises:
-
pacing / bearing
+
** bearings
-
* backbearing
+
** pacing / bearing
-
* offsets
+
* backbearing
 +
* offsets
Aids:
Aids:
-
SAR Fundamentals - Chapter 13 - Navigation
+
* SAR Fundamentals - Chapter 13 - Navigation
-
Plan:
+
Lesson plan:
-
1/ Review past material
+
1/ discuss Magnetic Declination
-
Give sample UTMs, find elevation
+
* Where needle points
-
Give sample UTM pairs find bearing relative to True North
+
-
2/ discuss Magnetic Declination
+
* Reading declination from map (add grid N)
-
Where needle points
+
* North pole moves
 +
** currently moving north about 40 km / year
 +
** Magnetic declination for Pincher Creek, 2011: 14deg 47' E.
 +
*** according to http://geomag.nrcan.gc.ca/apps/mdcal-eng.php
 +
*** We track on our wiki: [[Navigation#Declination]]
-
Reading declination from map (add grid N)
+
* Adjusting declination on compass
-
North pole moves
+
2/ shooting a bearing with a compass
-
- currently moving north about 40 km / year
+
-
Magnetic declination for Pincher Creek, 2010: 14deg 58' E.
+
* using compass
-
according to
+
** avoid metal
-
http://geomag.nrcan.gc.ca/apps/mdcal-eng.php
+
*** belt buckle
 +
** avoid magnetic fields
-
We track on our wiki: [[Navigation#Declination]]
+
* holding compass
 +
** hold flat
 +
 +
* sighting
 +
** using mirror
 +
** using sighting notches
 +
* reading bearing
 +
** rotating barrel
 +
** "red to the bed"
 +
** parallax problem
 +
*** parallel needle edge, not needle in the middle
-
* Adjusting declination on compass
+
* walking a bearing
 +
** setting bearing
 +
** how far to look
-
3/ shooting a bearing with a compass
+
3/ Pacing
-
using compass
+
* Step is one foot to the opposite
-
- avoid metal
+
* Pace is one foot to the same foot (two steps)
-
- avoid magnetic fields
+
-
holding compass
+
* counting your pace
-
+
-
sighting
+
-
reading bearing
+
* measure your pace in 10m
-
walking a bearing
+
* calculating distance from paces
-
- how far to look
+
-
4/ Pacing
+
* calculating paces from distance
-
slide: step vs. pace
+
4/ Exercises: bearings
-
counting your pace
+
* hand-out: Pacing and Traverse
-
calculating distance from paces
+
5/ Advance
-
calculating paces from distance
+
As they come up in discussion, describe:
-
5/ Exercises: bearings
+
* back bearings
-
hand-out: Pacing and Traverse
+
* offsets

Revision as of 22:30, 10 March 2011

SAR Fundamentals Manual: Ch.13 "Navigation"
Basic SAR Skills Manual: Ch.7 "Navigation"

Aids

Lesson plan

Material Covered:

  • Navigation - section 3 - compass use and exercise

Objective:

  • know cardinal directions
  • know compass degrees
  • know what affects a compass
  • magnetic declination
  • shooting a bearing with a compass
  • pacing
  • exercises:
    • bearings
    • pacing / bearing
  • backbearing
  • offsets

Aids:

  • SAR Fundamentals - Chapter 13 - Navigation


Lesson plan:

1/ discuss Magnetic Declination

  • Where needle points
  • Reading declination from map (add grid N)
  • Adjusting declination on compass

2/ shooting a bearing with a compass

  • using compass
    • avoid metal
      • belt buckle
    • avoid magnetic fields
  • holding compass
    • hold flat
  • sighting
    • using mirror
    • using sighting notches
  • reading bearing
    • rotating barrel
    • "red to the bed"
    • parallax problem
      • parallel needle edge, not needle in the middle
  • walking a bearing
    • setting bearing
    • how far to look

3/ Pacing

  • Step is one foot to the opposite
  • Pace is one foot to the same foot (two steps)
  • counting your pace
  • measure your pace in 10m
  • calculating distance from paces
  • calculating paces from distance

4/ Exercises: bearings

  • hand-out: Pacing and Traverse

5/ Advance

As they come up in discussion, describe:

  • back bearings
  • offsets
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