Showing posts with label Weather. Show all posts
Showing posts with label Weather. Show all posts

Thursday, November 29, 2012

SAFE COLD-WEATHER BOATING

English: A Coast Guardsman demonstrating the h...

Boating during the winter requires added precautions to ensure safety
Following basic safe boating rules is necessary whenever you’re on the water, but it takes on a new level of importance when the water is cold. As a rule of thumb, if the sum of the air and water temperatures added together equals less than 100 degrees and you fall into the water, you could be looking at a hypothermic situation.
Hypothermia occurs when your body loses heat faster than it can produce it, and cold water robs the body of heat 25 times faster than cold air. When your core body temperature drops below normal (98.6 degrees F), you become hypothermic. Your preparation and how you handle yourself following a fall into cold water will determine your odds of survival.
Remember the “1-10-1” rule. If you fall overboard, you usually have one minute to get your breathing under control. An involuntary gasp occurs when your body encounters the cold water, and this can cause you to breathe in a large amount of water, which can lead to drowning. After the initial shock, you will experience about one minute of deep and uncontrolled breathing. Calming yourself will be easier if you're wearing a life jacket because it will keep your head above the water line and help you avoid breathing in mouthfuls of water.
Over the next ten minutes, your blood flow will start to move away from your hands and feet in order to keep your body’s core warm. The body instinctively attempts to keep vital organs warm and functioning. This affects nerves and muscles farther away from your core, limiting their ability to function. It is during this crucial time that any attempt at self rescue should be made. Get out of the water. Even if your boat is capsized and upside down, crawling onto the part of the boat that is still above water will increase your odds of survival. If you are not wearing a life jacket and can’t get out of the water, you will eventually lose the ability to tread water or swim due to the lack of response from your arms and legs.
Keeping your core protected can help keep you conscious longer, and using the Heat Escape Lessening Position (HELP) will keep your core warmer longer. Wearing a life jacket makes the HELP position easier; you just pull your legs up to your chest and hug your knees. This keeps your body compact and surrounds your chest with protection. If you are in the water with other people, you can huddle together and share warmth. Most people will lose consciousness in one hour, but if you are wearing a life jacket, your face will be above the water and you will still be able to breathe even if you start to fade.
Always dress for the weather by wearing layers that can be removed if the weather warms, and avoid cotton clothing. Cotton will keep the water trapped by your body instead of wicking it away, and it takes a long time to dry. But if you do end up soaking wet, never remove your clothing and shoes unless you have a dry set to change into. Even though the clothes are cold and wet, they provide insulation to your body and will actually keep you warmer. By understanding how hypothermia affects your body and the 1-10-1 rule -- one minute to control your breathing, 10 minutes to rescue yourself and one hour before you lose consciousness -- you can increase your chance for survival if you run into problems while boating in cold water. Of course, wearing life jacket is always the smart choice while boating during any time of the year.

Friday, October 28, 2011

COLD-WATER BOATING REQUIRES ADDED PRECAUTIONS

Life Jacket (PSF)Image via Wikipedia
Anglers and hunters can protect themselves against hypothermia
PRATT — While pleasure boaters have winterized and stored their watercraft, avid waterfowl hunters and cold-weather anglers are gearing up for fall hunting and fishing seasons. But fall can be a dangerous time on the water. Most single-boat accidents take place this time of year, and with water temperatures cooling, these accidents can be deadly.
One common mistake is overloading a small boat with people and equipment. Overloaded boats are unstable and can easily capsize or cause passengers to fall overboard into frigid water. Sudden immersion into cold water delivers a brutal shock to the body, triggering a spontaneous inhalation reflex — deadly if one’s head is under water. But wearing a life jacket can be enough to keep your head above water during an involuntary gasp, keeping lungs from filling with water.
In addition, the body loses heat 25 times faster in water than in air of the same temperature. Hypothermia begins with shivering and a loss of feeling in the extremities. Within minutes of being immersed in cold water, a person can become confused and lose muscle control. By keeping capsized boaters afloat, life jackets also enable them to conserve energy and get out of the water or be rescued.
The following simple steps can make a cold water boating expedition much safer:
  • always wear a life jacket — new styles and camouflage patterns, including float coats, make wearing a life jacket much more comfortable;
  • dress properly for the cold — layered clothing can provide insulation and trap air to hold warmth;
  • avoid cotton clothing — wool and many synthetic materials are good choices, but cotton wicks cold water in toward the body;
  • never boat alone; and
  • let family members or friends know where you’re going and when you plan to return.
Boating can be an excellent way to hunt or fish in cold weather, but be safe. Planning ahead for the possibility of a cold water accident can save a life.

Wednesday, November 24, 2010

How to Stay Warm When Camping in Winter

Winter camping in SwedenImage via Wikipedia
As I sit here on a cool, but not yet cold November evening, I am already contemplating our Winter camping trips. I enjoy them as much as I do any camping trips we take all year long. Of course Winter camping is not for everyone. If you simply detest cold weather, no matter how much preparation you make, and no matter how much gear you own, your trip will likely not be an enjoyable one. However, if the thought of camping in a snowy scene with a full moon and the stillness that snow on the ground brings does pique your interest, then read on.

First, it is my opinion that unless you are in a warmer climate region, simply camping out with no attendant activities may not fulfill your wishes and/or needs. We find that we enjoy our Winter camping trips the most when we are engaging in some other activity such as hiking, hunting, or fishing. This is in juxtaposition to trips we take in Fall Summer, and Spring when just hanging out at camp and getting some R&R may be just the ticket. Realistically, unless you brought enough wood for a perpetual bonfire, sitting around camp when the temperature is well below freezing may not be what you consider recreation.

Staying warm on your camping trip involves paying attention to the following areas. For the purposes of this article, we will speak in generalities as opposed to discussing specific gear or synthetic materials. We will save these more in-depth discussions for future treatment. Our discussion will delve into clothing and footwear, sleeping gear, tents, and campfires.

When it comes to clothing there are some basic principles to remember. First, insulation created by pockets of air are what help us retain body heat. The enemies of this principle are moisture and wind. Moisture hinders heat retention in two ways. First of all, many synthetic and natural materials loose their insulation potential to a great degree when moisture becomes present via environmental sources or from sweat from the body. The classic example is cotton fabrics. Blue jeans are an awful choice for example for outdoor activities in cold weather, especially when they might become wet. Other poor examples of Winter clothing are flannel shirts made only of cotton.

As far as natural materials go, wool is the best. Even when wet it retains a high percentage of its insulation potential. Also, there are a number of outstanding synthetics on the market. These materials can however be quite expensive. The advantage of some of the synthetics is their breathability.

A couple of structural issues bear mentioning as well. First, dress in layers. This allows you to shed layers as you warm and add them back as you chill. Also, remember that a very large percentage of your body heat is lost through your head. A cap in cold weather is a must. On the other end of things, good footwear is critical as well. Waterproof and insulated boots are great. Coupled with wool or synthetic socks, you should be in good shape.

When sleeping in your tent, a good sleeping bag is critical when Winter camping. Couple this with a good pad between you and your sleeping bag and the ground. This sleeping pad is vital. Even if you do not care about comfort, the heat transfer between you and the ground without the pad will cause rapid body heat loss. I like a mummy bag where is can cinch the top closed. This crates a situation where the bag keeps in not only my body heat but my breathing also helps with warmth. Take the time and make the effort to get your bag zipped properly and if equipped with a drawstring, that you draw the hood tight.

When it comes to your tent, depending on where you live, you may or may not be able to get by with a three season tent. We use 3-season solo tents (individual tents) during the Winter. With the fly attached, not much heat escapes, and with such a small area to heat, our body heat has to do less work to warm the tent area. For more extreme climates (we are in the Midwest), a more expensive four season tent will be a real plus or even a necessity. These 4-season tents can be bought realistically at the low end for around $200 all the way up to $1,000 or more.

Building a campfire can bring its own challenges in Winter weather. If there is snow, the dampness may make it hard to ignite the fire. We bring fire starter sticks that can be purchased at local stores for under a dollar. These sticks are infused with a fuel and burn hot for quite some time. They are easy to start. With a good layer of kindling you should be able to start a fire in most conditions. As a back-up, I like to bring a one-burner stove. I can boil water or heat chili or whatever we food we have should a fire not be an option.

Some of my favorite camping memories are from Winter trips. The invigorating aspect of awaking on a cold Winter morning makes me feel more alive. At another level, this activity makes me appreciate more my warm bed at home. At any rate, we hope these tips are a quality starting point for your Winter camping considerations.

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