Outdoor Navigation Tips
Hiking, and in particular hiking in remote areas, is a great
experience if approached with due regard for fitness, safety and
skill.
One of the major skill categories, is the ability to navigate
with or without compass and map. Ideally, no one should head off
the beaten track without map or compass, but what if you find
yourself in that situation, or you lose or damage your compass?
Here are a few basic 'skills' that could one day be of use to
you.
Finding direction by using your watch...
If you have a watch that is working correctly, you can always
quickly determine the points of the compass as long as the
position of the sun is visible.
The method used varies depending upon which hemisphere (northern
or southern) that you happen to be living in. The following
methods are described using an analog watch, (that's a watch
with an hour and a minute hand) but they can be applied just as
well if you own a digital watch - just use your imagination to
superimpose the 12 hourly numerals and the relevant position of
the 'hour hand' on the face of your digital watch.
Northern Hemisphere
Holding your watch horizontally, point the 'hour hand' of your
watch at the sun.
Note the direction that lies exactly midway between the 'hour
hand' and the numeral twelve on your watch. This will be
South. Once you have established this, it will be easy to
determine the other points of the compass.
Southern Hemisphere
Holding your watch horizontally, point the numeral twelve on
your watch at the sun.
Note the direction that lies exactly midway between the twelve
and the 'hour hand'.
This will be North.
These methods will give you a good approximation of compass
direction. If your watch happens to be adjusted for daylight
saving at the time, then 'remove' the daylight saving for
greater accuracy.
Another method of determining compass points can be used if you
do not have a watch. This method takes longer and also requires
enough sunlight to cast a shadow...
To find North without a watch
Before noon, on level terrain, position a stick of about 3ft
upright into the ground.
Mark the tip of its shadow with a peg or stone.
Using the tip of the shadow as a radius, draw an arc around the
stick. The shadow will shorten as it approaches noon, pulling
back from the arc. It will then lengthen again - where the
afternoon shadow once again touches the arc, place another peg
or stone.
Now draw a straight line between the two pegs/stones - this will
be an East/West line, with the first peg being in the westerly
direction. You can now draw a North/South line at right angles
to the East/West line.
The following (less accurate) method can also be used at any
time of the day without drawing an arc...
Peg the tip of the first shadow, then about 20min later peg the
tip of the moved shadow. Draw a straight line between the two
pegs, and this will be an approximately East/West line, with the
first peg again being the westerly one.
A typical error when lost, is a tendency to wander off what you
may think is a straight line bearing, sometimes even slowly
circling back on yourself.
To prevent this, note an object (tree, rock, terrain feature)
that lies directly ahead of you in the direction you wish to
travel, then aim for it. When you reach it, take another bearing
on the direction you wish to head, sight another object directly
ahead of you and repeat the process.
In areas of restricted distance visibility, you may have to
repeat this quite often over short 'legs' to ensure that you are
remaining on course.
Keeping a course by the clouds...
What if it's a cloudy day with no sun visible to get a bearing
on, or the bush canopy prevents you getting a clear "shot" at
the sun? Well, if you're lucky, it may be windy with the clouds
moving in a constant direction - note the directional flow of
the clouds, and adjust your course relevant to their direction.
e.g., If the clouds are moving from your front from right to
left over your shoulders, keep them there, at the same time,
sight an object straight ahead of you and head for it.
To retrace your steps in the same general direction, just do an
about turn, then keep the clouds moving from behind and now left
to right over your shoulders, and repeat the process.
As an example of 'cloud navigation', once when moving inland
through dense bush away from a coastal beach and eventually
deciding to retrace my steps to where I'd left my kayak, I was
aware that I didn't have any idea in which direction the coast
lay.
Before entering the treeline, it was noted that the clouds were
moving in a direct line from the trees to the coastline - it was
just a simple matter then of looking up and following the
direction of the clouds to enable myself to head in the correct
general direction and once again access the beach.
Being aware of your surroundings will often pay off, so try to
cultivate that habit.
Telling the time without a watch...
Determine North, South, East and West using the method
previously described.
Position your stick at the intersection point of your East/West,
North/South lines.
The Eastern point of the arc around the stick will be 1800hrs,
the Western point will be 0600hrs, whilst the Northern or
Southern (depending on which hemisphere you're in) midpoint of
the arc will be 1200hrs.
The approximate time of day can then be read off the arc using
the moving shadow.