Chapter 94 Nonmedical Backcountry Equipment for Wilderness Professionals
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General Concepts for Choosing Equipment
Factors to consider when choosing outdoor equipment include the following:
An outing in a remote locale or of a long duration may require different gear than would a short outing close to an urban environment. In the wilderness setting, the equipment one uses is not just for personal adornment or comfort—it may be a lifesaving tool (Figure 94-1, online).
Choosing Gear
Some newer, lighter, and “high-tech” tools use cutting-edge materials. Carbon fiber, titanium, magnesium, aluminum, plastics, and other materials create strong, light equipment. If weight, durability, and maximal performance are issues, consider using tools made of these materials. If one does not need extremely lightweight equipment, then traditional materials may work just fine. For example, a standard aluminum avalanche probe is more durable and only slightly heavier than is a new carbon fiber probe. Using light gear potentially introduces some risk. The gear can be less durable, less reliable, and more expensive. A plastic avalanche shovel is not nearly as durable as is a heavier aluminum one. Multifunction gear is a great way to shed weight and space. However, performance of each function may be compromised. For example, multitool pliers do not have the strength or power of simple tongue-and-groove pliers. Also, if the tool breaks or is lost, one has lost more than just a single item. For example, most experts agree that in a rescue, an avalanche probe is superior to ski poles that convert to a probe (Figure 94-2).
Essential Emergency Equipment
How Far? How Long?
BOX 94-1 Basic Emergency Kit
A basic emergency kit should include first-aid, survival, and repair materials.
First-Aid Kit
Waterproof cloth first-aid tape is an essential first-aid item, because it has a wide range of uses and is difficult to improvise in the field. A basic kit should include wound care supplies and personal protective equipment (CPR mask, gloves, face mask) at a minimum. Wilderness medicine professionals may carry more advanced supplies, tools, and medicines (see Chapter 91). This kit should also include sunscreen.
Navigation
The bare minimum is a compass with declination correction and a topographic map. An altimeter is useful, especially in the mountains or canyons. One may choose to carry a GPS unit but should always have a compass for backup (see Chapter 96). Surveyor’s tape can be used to mark dense woods. Wands (1-m [3-foot] bamboo poles with surveyor’s tape on the top) are useful for marking crevasses and snow routes.
Repair Materials
The basic repair supplies can include a multitool. This should include pliers, wire cutters, screwdrivers, small knife blade, and scissors (see Box 94-4).
Clothing
In addition to what one is wearing on a wilderness outing, one should carry at least one layer more than what one expects to use on the trip. Consider carrying enough clothing to survive the unexpected night out. See Chapter 93 for detailed information on clothing.
Information about retail emergency kits is found at http://www.orgear.com or www.omnikit.com. Complete medical supplies are listed in Chapter 91. Equipment for vehicles is listed in Box 94-2.
Navigation
Many techniques exist for use of map and compass. Information is available in Chapter 96. Overall, the concept of navigation is to know current location and direction of intended travel. An altimeter is useful, especially in the mountains or canyons. Wrist altimeters are either GPS based or interpreted via changes in barometric pressure. GPS devices are more accurate. A sudden change in barometric pressure can indicate an impending storm and allow persons additional time to find shelter. Many wristwatches now feature storm alarms.
GPS devices allow easy and accurate positioning via triangulation with satellites (Figure 94-3). The greatest utility of GPS is when used in concert with a topographic map and compass. GPS devices provide information such as velocity, bearing, and distance or deviation to next waypoint. They are available in handheld and wrist-top configurations. Handheld units have a larger screen but are more bulky than the wrist-top devices. Some display topographic maps, although at varying resolutions. Wrist-top GPS devices are newer technology and are more expensive. Additional features, such as heart rate monitor, serve to combine a traditional training wristwatch with a GPS device. The information is compatible with Google Earth and similar programs, so that the user may upload the information to a personal computer to track route/performance (Figure 94-3, B). Wrist-top GPS units are commonly synchronized to a computer, where preplanned checkpoints are established.
Sun Protection
Carry sunscreen and sun-protective eyewear, either goggles or glasses. A sun hat and sun protective clothing are also important. See Chapters 14 and 93 for more information about sun protection.
Lights
Headlamps
With two equal AA batteries, most headlamp bulbs perform as follows:
Features to consider include light distribution, durability, water resistance, and maintenance. The headlamp should be compatible with a helmet if that is a requirement. A good headlamp has a spare bulb stored within it, is weather resistant, and has smooth light distribution with an adjustable beam. A good field of illumination provides even lighting in front of the user and well into the field of peripheral vision. Shape of the beam depends on housing. Some have a narrow beam with a longer range, sometimes up to 20 or 30 m (65.6 or 98.4 feet); these headlamps are good for night searches or route finding. Headlamps with a wide but short beam concentrate light for near work, such as within a tent or vehicle. The best lights have adjustable beams to allow either close or distance illumination. Waterproof lamps have O-rings or other gaskets to resist rain and sweat. Dive headlamps are completely sealed and submersible. Cavers often use long-lasting carbide lamps. Carbide lamps are also called acetylene lamps. They are simple lamps that produce and burn acetylene (C2H2) that is created by the reaction of calcium carbide (CaC2) with water (Figure 94-4).
Lanterns
Lanterns are valuable for base camp operations or on trips during which much light is needed after dark, such as when cooking for large groups, reading, or doing research. Liquid fuel lanterns burn white gas, a purified form of gasoline, yielding more light per pound of fuel than do battery-powered lamps. With a gas lantern, one should carry spare mantles and transport the lamp in a protective case. The mantles and glass globe are fragile, and gas must be stored safely. These lanterns become very hot. Hazards associated with liquid fuel are listed in Box 94-3.
Tools
Multifunction Tools
Recreationalists most often use a compact multifunction tool (multitool) or a pocketknife with accessories like bottle and can openers. Professional guides or outfitters may need a compact folding knife blade and a separate multipurpose tool with many tool components (Figure 94-5). See Box 94-4 for a basic idea of multitool components.
At a minimum, a multitool should have pliers, wire cutters, knife blade, can opener, and flat and Phillips head screwdrivers. It is useful in many situations to have a saw, awl, tweezers, and scissors (Figures 94-5 and 94-6; Figure 94-6, online).
Knives
Generally knives exist in two basic forms: fixed blades and folding blades. Many survival experts feel that a nonfolding, fixed-blade knife is best. Folding knives are often more practical because they can be stowed in the handle, thus making them more compact. Persons who prefer a folding knife usually select one with a locking blade so that more force can be applied without risk for the knife folding accidentally (Figure 94-7). A fixed-blade knife provides greater structural strength for making kindling and other forceful maneuvers.
Blade Shapes
Knife blades have many shapes, depending on their intended use, for example: