COLD WEATHER SURVIVAL

One of the most difficult survival situations is a cold
weather scenario. Remember, cold weather is an adversary
that can be as dangerous as an enemy soldier. Every time
you venture into the cold, you are pitting yourself against
the elements. With a little knowledge of the environment,
proper plans, and appropriate equipment, you can overcome
the elements. As you remove one or more of these
factors, survival becomes increasingly difficult. Remember,
winter weather is highly variable. Prepare yourself to adapt
to blizzard conditions even during sunny and clear weather.
Cold is a far greater threat to survival than it appears. It
decreases your ability to think and weakens your will to do
anything except to get warm. Cold is an insidious enemy; as
it numbs the mind and body, it subdues the will to survive.

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Cold makes it very easy to forget your ultimate goal—to
survive.
COLD REGIONS AND LOCATIONS
Cold regions include arctic and subarctic areas and areas immediately
adjoining them. You can classify about 48 percent of the northern hemisphere’s
total landmass as a cold region due to the influence and extent
of air temperatures. Ocean currents affect cold weather and cause large
areas normally included in the temperate zone to fall within the cold
regions during winter periods. Elevation also has a marked effect on
defining cold regions.
Within the cold weather regions, you may face two types of cold weather
environments—wet or dry. Knowing in which environment your area
of operations falls will affect planning and execution of a cold weather
operation.
Wet Cold Weather Environments
Wet cold weather conditions exist when the average temperature in a
24-hour period is -10 degrees C or above. Characteristics of this condition
are freezing during the colder night hours and thawing during the
day. Even though the temperatures are warmer during this condition,
the terrain is usually very sloppy due to slush and mud. You must concentrate
on protecting yourself from the wet ground and from freezing
rain or wet snow.
Dry Cold Weather Environments
Dry cold weather conditions exist when the average temperature in
a 24-hour period remains below -10 degrees C. Even though the temperatures
in this condition are much lower than normal, you do not
have to contend with the freezing and thawing. In these conditions, you
need more layers of inner clothing to protect you from temperatures
as low as –60 degrees C. Extremely hazardous conditions exist when
wind and low temperature combine.
WINDCHILL
Windchill increases the hazards in cold regions. Windchill is the
effect of moving air on exposed flesh. For instance, with a 27.8-kph

2
(
knot) wind and a temperature of -10 degrees C, the equivalent
windchill temperature is -23 degrees C. Figure
1 gives the windchill
factors for various temperatures and wind speeds.
Remember, even when there is no wind, you will create the equivalent
wind by skiing, running, being towed on skis behind a vehicle, working
around aircraft that produce wind blasts.
BASIC PRINCIPLES
OF COLD WEATHER
SURVIVAL
It is more difficult for you to satisfy your basic water, food, and shelter
needs in a cold environment than in a warm environment. Even if you
have the basic requirements, you must also have adequate protective
clothing and the will to survive. The will to survive is as important as the
basic needs. There have been incidents when trained and well-equipped
individuals have not survived cold weather situations because they lacked
the will to live. Conversely, this will has sustained individuals less
well-trained and equipped.
There are many different items of cold weather equipment and clothing
issued by the U.S. Army today. Specialized units may have access to
newer, lightweight gear such as polypropylene underwear, GORE-TEX
outerwear and boots, and other special equipment. Remember, however,
the older gear will keep you warm as long as you apply a few cold
weather principles. If the newer types of clothing are available, use
them. If not, then your clothing should be entirely wool, with the possible
exception of a windbreaker.
You must not only have enough clothing to protect you from the cold,
you must also know how to maximize the warmth you get from it.
For example, always keep your head covered. You can lose 40 to 45
percent of body heat from an unprotected head and even more from
the unprotected neck, wrist, and ankles. These areas of the body are
good radiators of heat and have very little insulating fat. The brain
is very susceptible to cold and can stand the least amount of cooling.
Because there is much blood circulation in the head, most of which
is on the surface, you can lose heat quickly if you do not cover
your head.

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There are four basic principles to follow to keep warm. An easy way to
remember these basic principles is to use the word COLD—
C
OL
D
C
O
L
D
Keep clothing clean.
Avoid overheating.
Wear clothes loose and in layers.
Keep clothing dry.
Keep clothing clean. This principle is always important for sanitation
and comfort. In winter, it is also important from the standpoint
of warmth. Clothes matted with dirt and grease lose much
of their insulation value. Heat can escape more easily from the
body through the clothing’s crushed or filled up air pockets.
Avoid overheating. When you get too hot, you sweat and your
clothing absorbs the moisture. This affects your warmth in two
ways: dampness decreases the insulation quality of clothing, and
as sweat evaporates, your body cools. Adjust your clothing so that
you do not sweat. Do this by partially opening your parka or
jacket, by removing an inner layer of clothing, by removing heavy
outer mittens, or by throwing back your parka hood or changing
to lighter headgear. The head and hands act as efficient heat
dissipaters when overheated.
Wear your clothing loose and in layers. Wearing tight clothing and
footgear restricts blood circulation and invites cold injury. It also
decreases the volume of air trapped between the layers, reducing
its insulating value. Several layers of lightweight clothing are
better than one equally thick layer of clothing, because the layers
have dead-air space between them. The dead-air space provides
extra insulation. Also, layers of clothing allow you to take off or
add clothing layers to prevent excessive sweating or to increase
warmth.
Keep clothing dry. In cold temperatures, your inner layers of clothing
can become wet from sweat and your outer layer, if not water
repellent, can become wet from snow and frost melted by body
heat. Wear water repellent outer clothing, if available. It will shed
most of the water collected from melting snow and frost. Before
entering a heated shelter, brush off the snow and frost. Despite
the precautions you take, there will be times when you cannot
keep from getting wet. At such times, drying your clothing may

5
become a major problem. On the march, hang your damp mittens
and socks on your rucksack. Sometimes in freezing temperatures,
the wind and sun will dry this clothing. You can also place damp
socks or mittens, unfolded, near your body so that your body heat
can dry them. In a campsite, hang damp clothing inside the shelter
near the top, using drying lines or improvised racks. You may
even be able to dry each item by holding it before an open fire.
Dry leather items slowly. If no other means are available for drying
your boots, put them between your sleeping bag shell and
liner. Your body heat will help to dry the leather.
A heavy, down-lined sleeping bag is a valuable piece of survival gear in
cold weather. Ensure the down remains dry. If wet, it loses a lot of its
insulation value. If you do not have a sleeping bag, you can make one
out of parachute cloth or similar material and natural dry material, such
as leaves, pine needles, or moss. Place the dry material between two
layers of the material.
Other important survival items are a knife; waterproof matches in a
waterproof container, preferably one with a flint attached; a durable
compass; map; watch; waterproof ground cloth and cover; flashlight;
binoculars; dark glasses; fatty emergency foods; food gathering gear;
and signaling items.
Remember, a cold weather environment can be very harsh. Give a good
deal of thought to selecting the right equipment for survival in the cold.
If unsure of an item you have never used, test it in an “overnight backyard”
environment before venturing further. Once you have selected
items that are essential for your survival, do not lose them after you
enter a cold weather environment.
HYGIENE
Although washing yourself may be impractical and uncomfortable in a
cold environment, you must do so. Washing helps prevent skin rashes
that can develop into more serious problems.
In some situations, you may be able to take a snow bath. Take a handful
of snow and wash your body where sweat and moisture accumulate, such
as under the arms and between the legs, and then wipe yourself dry. If

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possible, wash your feet daily and put on clean, dry socks. Change your
underwear at least twice a week. If you are unable to wash your underwear,
take it off, shake it, and let it air out for an hour or two.
If you are using a previously used shelter, check your body and clothing
for lice each night. If your clothing has become infested, use insecticide
powder if you have any. Otherwise, hang your clothes in the cold,
then beat and brush them. This will help get rid of the lice, but not
the eggs.
If you shave, try to do so before going to bed. This will give your skin a
chance to recover before exposing it to the elements.
MEDICAL ASPECTS
When you are healthy, your inner core temperature (torso temperature)
remains almost constant at 37 degrees C (98.6 degrees F). Since your
limbs and head have less protective body tissue than your torso, their
temperatures vary and may not reach core temperature.
Your body has a control system that lets it react to temperature extremes
to maintain a temperature balance. There are three main factors
that affect this temperature balance—heat production, heat loss, and
evaporation. The difference between the body’s core temperature and
the environment’s temperature governs the heat production rate. Your
body can get rid of heat better than it can produce it. Sweating helps to
control the heat balance. Maximum sweating will get rid of heat about
as fast as maximum exertion produces it.
Shivering causes the body to produce heat. It also causes fatigue that, in
turn, leads to a drop in body temperature. Air movement around your
body affects heat loss. It has been calculated that a naked man exposed
to still air at or about 0 degrees C can maintain a heat balance if he
shivers as hard as he can. However, he can’t shiver forever.
It has also been calculated that a man at rest wearing the maximum
arctic clothing in a cold environment can keep his internal heat balance
during temperatures well below freezing. To withstand really cold
conditions for any length of time, however, he will have to become
active or shiver.

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COLD INJURIES
The best way to deal with injuries and sicknesses is to take measures to
prevent them from happening in the first place. Treat any injury or sickness
that occurs as soon as possible to prevent it from worsening.
The knowledge of signs and symptoms and the use of the buddy system
are critical in maintaining health. Following are cold injuries that
can occur.
Hypothermia
Hypothermia is the lowering of the body temperature at a rate faster
than the body can produce heat. Causes of hypothermia may be general
exposure or the sudden wetting of the body by falling into a lake or
spraying with fuel or other liquids.
The initial symptom is shivering. This shivering may progress to the
point that it is uncontrollable and interferes with an individual’s ability
to care for himself. This begins when the body’s core (rectal) temperature
falls to about 35.5 degrees C (96 degrees F). When the core
temperature reaches 35 to 32 degrees C (95 to 90 degrees F), sluggish
thinking, irrational reasoning, and a false feeling of warmth may occur.
Core temperatures of 32 to 30 degrees C (90 to 86 degrees F) and below
result in muscle rigidity, unconsciousness, and barely detectable signs
of life. If the victim’s core temperature falls below 25 degrees C
(77 degrees F), death is almost certain.
To treat hypothermia, rewarm the entire body. If there are means available,
rewarm the person by first immersing the trunk area only in warm
water of 37.7 to 43.3 degrees C (100 to 110 degrees F).
CAUTION
Rewarming the total body in a warm water bath should be done only in a
hospital environment because of the increased risk of cardiac arrest and
rewarming shock.
One of the quickest ways to get heat to the inner core is to give warm
water enemas. Such an action, however, may not be possible in a survival
situation. Another method is to wrap the victim in a warmed sleeping
bag with another person who is already warm; both should be naked.

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CAUTION
The individual placed in the sleeping bag with victim could also become a
hypothermia victim if left in the bag too long.
If the person is conscious, give him hot, sweetened fluids. One of the
best sources of calories is honey or dextrose; if unavailable, use sugar,
cocoa, or a similar soluble sweetener.
CAUTION
Do not force an unconscious person to drink.
There are two dangers in treating hypothermia-rewarming too rapidly
and “after drop.” Rewarming too rapidly can cause the victim to have
circulatory problems, resulting in heart failure. After drop is the sharp
body core temperature drop that occurs when taking the victim from the
warm water. Its probable muse is the return of previously stagnant limb
blood to the core (inner torso) area as recirculation occurs. Concentrating
on warming the core area and stimulating peripheral circulation will
lessen the effects of after drop. Immersing the torso in a warm bath, if
possible, is the best treatment.
Frostbite
This injury is the result of frozen tissues. Light frostbite involves only
the skin that takes on a dull whitish pallor. Deep frostbite extends
to a depth below the skin. The tissues become solid and immovable.
Your feet, hands, and exposed facial areas are particularly vulnerable
to frostbite.
The best frostbite prevention, when you are with others, is to use the
buddy system. Check your buddy’s face often and make sure that he
checks yours. If you are alone, periodically cover your nose and lower
part of your face with your mittened hand.
The following pointers will aid you in keeping warm and preventing
frostbite when it is extremely cold or when you have less than adequate
clothing:
Face. Maintain circulation by twitching and wrinkling the skin on your
face making faces. Warm with your hands.

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Ears. Wiggle and move your ears. Warm with your hands.
Hands. Move your hands inside your gloves. Warm by placing your
hands close to your body.
Feet. Move your feet and wiggle your toes inside your boots.
A loss of feeling in your hands and feet is a sign of frostbite. If you have
lost feeling for only a short time, the frostbite is probably light. Otherwise,
assume the frostbite is deep. To rewarm a light frostbite, use your
hands or mittens to warm your face and ears. Place your hands under
your armpits. Place your feet next to your buddy’s stomach. A deep
frostbite injury, if thawed and refrozen, will cause more damage than a
nonmedically trained person can handle. Figure
2 lists some do’s and
don’ts regarding frostbite.
Trench Foot and Immersion Foot
These conditions result from many hours or days of exposure to wet
or damp conditions at a temperature just above freezing. The symptoms
are a sensation of pins and needles, tingling, numbness, and then pain.
The skin will initially appear wet, soggy, white, and shriveled. As it progresses
and damage appears, the skin will take on a red and then a bluish
or black discoloration. The feet become cold, swollen, and have a waxy
appearance. Walking becomes difficult and the feet feel heavy and
numb. The nerves and muscles sustain the main damage, but gangrene
can occur. In extreme cases, the flesh dies and it may become necessary
to have the foot or leg amputated. The best prevention is to keep your
feet dry. Carry extra socks with you in a waterproof packet. You can dry
wet socks against your torso (back or chest). Wash your feet and put on
dry socks daily.

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Dehydration
When bundled up in many layers of clothing during cold weather, you
may be unaware that you are losing body moisture. Your heavy clothing
absorbs the moisture that evaporates in the air. You must drink water to
replace this loss of fluid. Your need for water is as great in a cold environment
as it is in a warm environment (Chapter 13). One way to tell
if you are becoming dehydrated is to check the color of your urine on
snow. If your urine makes the snow dark yellow, you are becoming dehydrated
and need to replace body fluids. If it makes the snow light yellow
to no color, your body fluids have a more normal balance.
Cold Diuresis
Exposure to cold increases urine output. It also decreases body fluids
that you must replace.
Sunburn
Exposed skin can become sunburned even when the air temperature is
below freezing. The sun’s rays reflect at all angles from snow, ice, and
water, hitting sensitive areas of skin—lips, nostrils, and eyelids. Exposure
to the sun results in sunburn more quickly at high altitudes than at low
altitudes. Apply sunburn cream or lip salve to your face when in the sun.
Snow Blindness
The reflection of the sun’s ultraviolet rays off a snow-covered area
causes this condition. The symptoms of snow blindness are a sensation
of grit in the eyes, pain in and over the eyes that increases with eyeball
movement, red and teary eyes, and a headache that intensifies with continued
exposure to light. Prolonged exposure to these rays can result in
permanent eye damage. To treat snow blindness, bandage your eyes until
the symptoms disappear.
You can prevent snow blindness by wearing sunglasses. If you don’t have
sunglasses, improvise. Cut slits in a piece of cardboard, thin wood, tree
bark, or other available material (Figure
3). Putting soot under your
eyes will help reduce shine and glare.
Constipation
It is very important to relieve yourself when needed. Do not delay because
of the cold condition. Delaying relieving yourself because of the

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cold, eating dehydrated foods, drinking too little liquid, and irregular
eating habits can cause you to become constipated. Although not disabling,
constipation can cause some discomfort. Increase your fluid
intake to at least 2 liters above your normal 2 to 3 liters daily intake
and, if available, eat fruit and other foods that will loosen the stool.
Insect Bites
Insect bites can become infected through constant scratching. Flies can
carry various disease-producing germs. To prevent insect bites, use insect
repellent, netting, and wear proper clothing. See Chapter 11 for information
on insect bites and Chapter 4 for treatment.
SHELTERS
Your environment and the equipment you carry with you will determine
the type of shelter you can build. You can build shelters in wooded
areas, open country, and barren areas. Wooded areas usually provide the
best location, while barren areas have only snow as building-material.
Wooded areas provide timber for shelter construction, wood for fire,
concealment from observation, and protection from the wind.
Note: In extreme cold, do not use metal, such as an aircraft fuselage, for
shelter. The metal will conduct away from the shelter what little heat you
can generate.

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Shelters made from ice or snow usually require tools such as ice axes or
saws. You must also expend much time and energy to build such a shelter.
Be sure to ventilate an enclosed shelter, especially if you intend to
build a fire in it. Always block a shelter’s entrance, if possible, to keep
the heat in and the wind out. Use a rucksack or snow block. Construct
a shelter no larger than needed. This will reduce the amount of space
to heat. A fatal error in cold weather shelter construction is making the
shelter so large that it steals body heat rather than saving it. Keep
shelter space small.
Never sleep directly on the ground. Lay down some pine boughs, grass,
or other insulating material to keep the ground from absorbing your
body heat.
Never fall asleep without turning out your stove or lamp. Carbon monoxide
poisoning can result from a fire burning in an unventilated shelter.
Carbon monoxide is a great danger. It is colorless and odorless. Any
time you have an open flame, it may generate carbon monoxide. Always
check your ventilation. Even in a ventilated shelter, incomplete combustion
can cause carbon monoxide poisoning. Usually, there are no
symptoms. Unconsciousness and death can occur without warning.
Sometimes, however, pressure at the temples, burning of the eyes,
headache, pounding pulse, drowsiness, or nausea may occur. The one
characteristic, visible sign of carbon monoxide poisoning is a cherry red
coloring in the tissues of the lips, mouth, and inside of the eyelids. Get
into fresh air at once if you have any of these symptoms.
There are several types of field-expedient shelters you can quickly build
or employ. Many use snow for insulation.
Snow Cave Shelter
The snow cave shelter (Figure
4) is a most effective shelter because
of the insulating qualities of snow. Remember that it takes time and energy
to build and that you will get wet while building it. First, you need
to find a drift about 3 meters deep into which you can dig. While building
this shelter, keep the roof arched for strength and to allow melted
snow to drain down the sides. Build the sleeping platform higher than
the entrance. Separate the sleeping platform from the snow cave’s walls
or dig a small trench between the platform and the wall. This platform
will prevent the melting snow from wetting you and your equipment.
This construction is especially important if you have a good source of

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heat in the snow cave. Ensure the roof is high enough so that you can sit
up on the sleeping platform. Block the entrance with a snow block or
other material and use the lower entrance area for cooking. The walls
and ceiling should be at least 30 centimeters thick. Install a ventilation
shaft. If you do not have a drift large enough to build a snow cave, you
can make a variation of it by piling snow into a mound large enough to
dig out.
Snow Trench Shelter
The idea behind this shelter (Figure
4) is to get you below the snow
and wind level and use the snow’s insulating qualities. If you are in an
area of compacted snow, cut snow blocks and use them as overhead
cover. If not, you can use a poncho or other material. Build only one
entrance and use a snow block or rucksack as a door.
Snow Block and
Parachute Shelter
Use snow blocks for the sides and parachute material for overhead
cover (Figure
4). If snowfall is heavy, you will have to clear snow
from the top at regular intervals to prevent the collapse of the parachute
material.
Snow House or Igloo
In certain areas, the natives frequently use this type of shelter (Figure

4) as hunting and fishing shelters. They are efficient shelters but
require some practice to make them properly. Also, you must be in an
area that is suitable for cutting snow blocks and have the equipment
to cut them (snow saw or knife).
Lean-To Shelter
Construct this shelter in the same manner as for other environments;
however, pile snow around the sides for insulation (Figure
5).
Fallen Tree Shelter
To build this shelter, find a fallen tree and dig out the snow underneath
it (Figure
6). The snow will not be deep under the tree. If you must
remove branches from the inside, use them to line the floor.

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Tree-Pit Shelter
Dig snow out from under a suitable large tree. It will not be as deep
near the base of the tree. Use the cut branches to line the shelter. Use
a ground sheet as overhead cover to prevent snow from falling off the
tree into the shelter. If built properly, you can have 360-degree visibility
(Figure 5-12, Chapter 5, page 5-17).

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20-Man Life Raft
This raft is the standard overwater raft on U.S. Air Force aircraft. You
can use it as a shelter. Do not let large amounts of snow build up on the
overhead protection. If placed in an open area, it also serves as a good
signal to overhead aircraft.
FIRE
Fire is especially important in cold weather. It not only provides a means
to prepare food, but also to get warm and to melt snow or ice for water.
It also provides you with a significant psychological boost by making you
feel a little more secure in your situation.
Use the techniques described in Chapter 7 to build and light your fire.
If you are in enemy territory, remember that the smoke, smell, and light
from your fire may reveal your location. Light reflects from surrounding
trees or rocks, making even indirect light a source of danger. Smoke
tends to go straight up in cold, calm weather, making it a beacon during
the day, but helping to conceal the smell at night. In warmer weather,
especially in a wooded area, smoke tends to hug the ground, making it
less visible in the day, but making its odor spread.
If you are in enemy territory, cut low tree boughs rather than the entire
tree for firewood. Fallen trees are easily seen from the air.
All wood will burn, but some types of wood create more smoke than
others. For instance, coniferous trees that contain resin and tar create
more and darker smoke than deciduous trees.
There are few materials to use for fuel in the high mountainous regions
of the arctic. You may find some grasses and moss, but very little. The
lower the elevation, the more fuel available. You may find some scrub
willow and small, stunted spruce trees above the tree line. On sea ice,
fuels are seemingly nonexistent. Driftwood or fats may be the only fuels
available to a survivor on the barren coastlines in the arctic and subarctic
regions.
Abundant fuels within the tree line are—
Spruce trees are common in the interior regions. As a conifer,
spruce makes a lot of smoke when burned in the spring and summer
months. However, it burns almost smoke-free in late fall and winter.

17
The tamarack tree is also a conifer. It is the only tree of the pine
family that loses its needles in the fall. Without its needles, it looks
like a dead spruce, but it has many knobby buds and cones on its bare
branches. When burning, tamarack wood makes a lot of smoke and
is excellent for signaling purposes.
Birch trees are deciduous and the wood burns hot and fast, as if
soaked with oil or kerosene. Most birches grow near streams and
lakes, but occasionally you will find a few on higher ground and
away from water.
Willow and alder grow in arctic regions, normally in marsh areas
or near lakes and streams. These woods burn hot and fast without
much smoke.
Dried moss, grass, and scrub willow are other materials you can use for
fuel. These are usually plentiful near streams in tundras (open, treeless
plains). By bundling or twisting grasses or other scrub vegetation to form
a large, solid mass, you will have a slower burning, more productive fuel.
If fuel or oil is available from a wrecked vehicle or downed aircraft, use
it for fuel. Leave the fuel in the tank for storage, drawing on the supply
only as you need it. Oil congeals in extremely cold temperatures, therefore,
drain it from the vehicle or aircraft while still warm if there is no
danger of explosion or fire. If you have no container, let the oil drain
onto the snow or ice. Scoop up the fuel as you need it.
CAUTION
Do not expose flesh to petroleum, oil, and lubricants in extremely cold temperatures.
The liquid state of these products is deceptive in that it can
cause frostbite.
Some plastic products, such as MRE spoons, helmet visors, visor housings,
aid foam rubber will ignite quickly from a burning match. They will
also burn long enough to help start a fire. For example, a plastic spoon
will burn for about 10 minutes.
In cold weather regions, there are some hazards in using fires, whether
to keep warm or to cook. For example—
Fires have been known to burn underground, resurfacing nearby.
Therefore, do not build a fire too close to a shelter.

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In snow shelters, excessive heat will melt the insulating layer of snow
that may also be your camouflage.
A fire inside a shelter lacking adequate ventilation can result in
carbon monoxide poisoning.
A person trying to get warm or to dry clothes may become careless
and burn or scorch his clothing and equipment.
Melting overhead snow may get you wet, bury you and your equipment,
and possibly extinguish your fire.
In general, a small fire and some type of stove is the best combination
for cooking purposes. A hobo stove (Figure
7) is particularly suitable
to the arctic. It is easy to make out of a tin can, and it conserves fuel.
A bed of hot coals provides the best cooking heat. Coals from a crisscross
fire will settle uniformly. Make this type of fire by crisscrossing the
firewood. A simple crane propped on a forked stick will hold a cooking
container over a fire.
For heating purposes, a single candle provides enough heat to warm
an enclosed shelter. A small fire about the size of a man’s hand is ideal
for use in enemy territory. It requires very little fuel, yet it generates
considerable warmth and is hot enough to warm liquids.

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WATER
There are many sources of water in the arctic and subarctic. Your
location and the season of the year will determine where and how
you obtain water.
Water sources in arctic and subarctic regions are more sanitary than
in other regions due to the climatic and environmental conditions. However,
always purify the water before drinking it. During the summer
months, the best natural sources of water are freshwater lakes, streams,
ponds, rivers, and springs. Water from ponds or lakes may be slightly
stagnant, but still usable. Running water in streams, rivers, and bubbling
springs is usually fresh and suitable for drinking.
The brownish surface water found in a tundra during the summer is a
good source of water. However, you may have to filter the water before
purifying it.
You can melt freshwater ice and snow for water. Completely melt both
before putting them in your mouth. Trying to melt ice or snow in your
mouth takes away body heat and may cause internal cold injuries. If on
or near pack ice in the sea, you can use old sea ice to melt for water. In
time, sea ice loses its salinity. You can identify this ice by its rounded
corners and bluish color.
You can use body heat to melt snow. Place the snow in a water bag and
place the bag between your layers of clothing. This is a slow process, but
you can use it on the move or when you have no fire.
Note: Do not waste fuel to melt ice or snow when drinkable water is available
from other sources.
When ice is available, melt it, rather than snow. One cup of ice yields
more water than one cup of snow. Ice also takes less time to melt. You
can melt ice or snow in a water bag, MRE ration bag, tin can, or improvised
container by placing the container near a fire. Begin with a small
amount of ice or snow in the container and, as it turns to water, add
more ice or snow.
Another way to melt ice or snow is by putting it in a bag made from porous
material and suspending the bag near the fire. Place a container
under the bag to catch the water.

20
During cold weather, avoid drinking a lot of liquid before going to bed.
Crawling out of a warm sleeping bag at night to relieve yourself means
less rest and more exposure to the cold.
Once you have water, keep it next to you to prevent refreezing. Also, do
not fill your canteen completely. Allowing the water to slosh around will
help keep it from freezing.
FOOD
There are several sources of food in the arctic and subarctic regions.
The type of food—fish, animal, fowl, or plant —and the ease in obtaining
it depend on the time of the year and your location.
Fish
During the summer months, you can easily get fish and other water life
from coastal waters, streams, rivers, and lakes. Use the techniques described
in Chapter 8 to catch fish.
The North Atlantic and North Pacific coastal waters are rich in seafood.
You can easily find crawfish, snails, clams, oysters, and king
crab. In areas where there is a great difference between the high and
low tide water levels, you can easily find shellfish at low tide. Dig in
the sand on the tidal flats. Look in tidal pools and on offshore reefs.
In areas where there is a small difference between the high- and
low-tide water levels, storm waves often wash shellfish onto the
beaches.
The eggs of the spiny sea urchin that lives in the waters around the
Aleutian Islands and southern Alaska are excellent food. Look for the
sea urchins in tidal pools. Break the shell by placing it between two
stones. The eggs are bright yellow in color.
Most northern fish and fish eggs are edible. Exceptions are the meat of
the arctic shark and the eggs of the sculpins.
The bivalves, such as clams and mussels, are usually more palatable than
spiral-shelled seafood, such as snails.

21
The sea cucumber is another edible sea animal. Inside its body are five
long white muscles that taste much like clam meat.
In early summer, smelt spawn in the beach surf. Sometimes you can
scoop them up with your hands.
You can often find herring eggs on the seaweed in midsummer. Kelp,
the long ribbonlike seaweed, and other smaller seaweed that grow
among offshore rocks are also edible.
Sea Ice Animals
You find polar bears in practically all arctic coastal regions, but rarely
inland. Avoid them if possible. They are the most dangerous of all bears.
They are tireless, clever hunters with good sight and an extraordinary
sense of smell. If you must kill one for food, approach it cautiously. Aim
for the brain; a bullet elsewhere will rarely kill one. Always cook polar
bear meat before eating it.
CAUTION
Do not eat polar bear liver as it contains a toxic concentration of vitamin A.
Earless seal meat is some of the best meat available. You need considerable
skill, however, to get close enough to an earless seal to kill it. In
spring, seals often bask on the ice beside their breathing holes. They
raise their heads about every 30 seconds, however, to look for their
enemy, the polar bear.
To approach a seal, do as the Eskimos do—stay downwind from it,
cautiously moving closer while it sleeps. If it moves, stop and imitate
its movements by lying flat on the ice, raising your head up and down,
and wriggling your body slightly. Approach the seal with your body sideways
to it and your arms close to your body so that you look as much

22
like another seal as possible. The ice at the edge of the breathing hole
is usually smooth and at an incline, so the least movement of the seal
may cause it to slide into the water. Therefore, try to get within 22 to 45
meters of the seal and kill it instantly (aim for the brain). Try to reach
the seal before it slips into the water. In winter, a dead seal will usually
float, but it is difficult to retrieve from the water.
Keep the seal blubber and skin from coming into contact with any
scratch or broken skin you may have. You could get “spekk-finger,”
that is, a reaction that causes the hands to become badly swollen.
Keep in mind that where there are seals, there are usually polar bears,
and polar bears have stalked and killed seal hunters.
You can find porcupines in southern subarctic regions where there are
trees. Porcupines feed on bark; if you find tree limbs stripped bare, you
are likely to find porcupines in the area.
Ptarmigans, owls, Canadian jays, grouse, and ravens are the only birds
that remain in the arctic during the winter. They are scarce north of
the tree line. Ptarmigans and owls are as good for food as any game
bird. Ravens are too thin to be worth the effort it takes to catch them.
Ptarmigans, which change color to blend with their surroundings,
are hard to spot. Rock ptarmigans travel in pairs and you can easily
approach them. Willow ptarmigans live among willow clumps in bottomlands.
They gather in large flocks and you can easily snare them. During
the summer months all arctic birds have a 2- to 3-week molting period
during which they cannot fly and are easy to catch. Use one of the
techniques described in Chapter 8 to catch them.
Skin and butcher game (see Chapter 8) while it is still warm. If you
do not have time to skin the game, at least remove its entrails, musk
glands, and genitals before storing. If time allows, cut the meat into
usable pieces and freeze each separately so that you can use the pieces
as needed. Leave the fat on all animals except seals. During the winter,
game freezes quickly if left in the open. During the summer, you can
store it in underground ice holes.
Plants
Although tundras support a variety of plants during the warm months,
all are small, however, when compared to plants in warmer climates. For

23
instance, the arctic willow and birch are shrubs rather than trees. The
following is a list of some plant foods found in arctic and subarctic
regions (see Appendix B for descriptions).
There are some plants growing in arctic and subarctic regions that are
poisonous if eaten (see Appendix C). Use the plants that you know are
edible. When in doubt, follow the Universal Edibility Test in Chapter 9,
Figure 9-5, page 9-8.
TRAVEL
As a survivor or an evader in an arctic or subarctic region, you will face
many obstacles. Your location and the time of the year will determine
the types of obstacles and the inherent dangers. You should—
Avoid traveling during a blizzard.
Take care when crossing thin ice. Distribute your weight by lying flat
and crawling.
Cross streams when the water level is lowest. Normal freezing and
thawing action may cause a stream level to vary as much as 2 to 2.5
meters per day. This variance may occur any time during the day,
depending on the distance from a glacier, the temperature, and the

24
terrain. Consider this variation in water level when selecting a campsite
near a stream.
Consider the clear arctic air. It makes estimating distance difficult.
You more frequently underestimate than overestimate distances.
Do not travel in “whiteout” conditions. The lack of contrasting colors
makes it impossible to judge the nature of the terrain.
Always cross a snow bridge at right angles to the obstacle it crosses.
Find the strongest part of the bridge by poking ahead of you with
a pole or ice axe. Distribute your weight by crawling or by wearing
snowshoes or skis.
Make camp early so that you have plenty of time to build a shelter.
Consider frozen or unfrozen rivers as avenues of travel. However,
some rivers that appear frozen may have soft, open areas that make
travel very difficult or may not allow walking, skiing, or sledding.
Use snowshoes if you are traveling over snow-covered terrain. Snow
30 or more centimeters deep makes traveling difficult. If you do not
have snowshoes, make a pair using willow, strips of cloth, leather, or
other suitable material.
It is almost impossible to travel in deep snow without snowshoes or skis.
Traveling by foot leaves a well-marked trail for any pursuers to follow.
If you must travel in deep snow, avoid snow-covered streams. The snow,
which acts as an insulator, may have prevented ice from forming over
the water. In hilly terrain, avoid areas where avalanches appear possible.
Travel in the early morning in areas where there is danger of avalanches.
On ridges, snow gathers on the lee side in overhanging piles called
cornices. These often extend far out from the ridge and may break loose
if stepped on.
WEATHER SIGNS
There are several good indicators of climatic changes.
Wind
You can determine wind direction by dropping a few leaves or grass or
by watching the treetops. Once you determine the wind direction, you
can predict the type of weather that is imminent. Rapidly shifting winds
indicate an unsettled atmosphere and a likely change in the weather.

25
Clouds
Clouds come in a variety of shapes and patterns. A general knowledge
of clouds and the atmospheric conditions they indicate can help you
predict the weather. See Appendix G for details.
Smoke
Smoke rising in a thin vertical column indicates fair weather. Low rising
or “flattened out” smoke indicates stormy weather.
Birds and Insects
Birds and insects fly lower to the ground than normal in heavy,
moisture-laden air. Such flight indicates that rain is likely. Most insect
activity increases before a storm, but bee activity increases before fair
weather.
Low-Pressure Front
Slow-moving or imperceptible winds and heavy, humid air often indicate
a low-pressure front. Such a front promises bad weather that will probably
linger for several days. You can “smell” and “hear” this front. The
sluggish, humid air makes wilderness odors more pronounced than during
high-pressure conditions. In addition, sounds are sharper and carry
farther in low-pressure than high-pressure conditions.

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