# INTRODUCTION TO NAVIGATION PRESENTATION

Document Sample

```					                                                                    1

Reading a map is an essential skill for planning a walk and for
knowing where you are.

You don’t need to be able to use a compass to lead a low level
walk, but it can help. It is however essential to be competent in
using a compass for leading remote and challenging walks.
2

MAPPING
BASICS
3

MAP TYPES

1:50000 Landranger                1:25000 Explorer

Best to check date of issue as landmarks can
change over time. Other maps are available, such as
Harvey's.
4
5
6

AUDIENCE PARTICIPATION!

WHERE AM I?

Give everyone 4 or 5 Grid References from the map
and ask them to identify what they find there
7

MEASURING SCALE

1:25 000 OS Explorer

1:50 000 OS Landranger

It might help you to remember that the larger the number in the
scale, the smaller the scale of the map will be.
8

AUDIENCE PARTICIPATION!

MAP SYMBOLS

Split into groups and identify
the symbols
9

CONTOURS

How high is each hill?
Contours closer together at top
Contours closer together at bottom
12
AUDIENCE PARTICIPATION!
13
MAP FEATURES
14
PARTS OF A COMPASS
15
ALIGNING THE MAP WITH THE REAL WORLD
16

(bridge)

(building)
17

bearing
off here
18

To follow the bearing:
19

MEASURING DISTANCE

Grid squares

String method

Straight edge

Map measurer
20

AUDIENCE PARTICIPATION!

Give everyone 3 or 4 end points and ask them to identify what
they are, the distance from each start to each end point and
the bearing between them [this should be in the notes]

EXAMPLE

START POINT GR X        END POINT GR Y         BEARING FROM X TO Y
WHAT IS FOUND THERE?    WHAT IS FOUND THERE?   AND DISTANCE

438005                  405013                 285 degrees
High House              Youth Hostel at High   3.38 km
Cross Castle
21

When looking at timings for your walk consider:
• walking speed (vary with terrain, stiles, party etc)

Kph                        mins per km
3                           20
3.5                         17
4                            15
4.5                          13.3
5                            12
•   Climbing hills – Naismith’s rule 30 mins extra per
300m ascended (1 min per 10m contour line)
•    Stops, including comfort breaks, lunch, etc…
•    Contingency
22

FURTHER GUIDANCE AND SUPPORT

More advice and guidance can be found at the walk leaders
pages of the Ramblers website:
www.ramblers.org.uk/Volunteer/AreaGroup/Resources/Led+Walks.htm

or email ledwalks@ramblers.org.uk

Thanks to all Ramblers groups whose websites were the source of some of the pictures.

```
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
 views: 5 posted: 10/3/2012 language: Unknown pages: 22