Undercurrent frequently reports on divers stranded at
sea. Those who are fortunate to get rescued report extreme
hypothermia and dehydration, both of which contribute to
delirium, incoherence, and the inability to make good decisions.
Brad Bowins (Toronto, ON), one of our loyal readers,
has read our many pieces, and tells us how he prepares himself
should he be so unfortunate as to find himself adrift.
* * * * * *
The article in the August 2008 Undercurrent, “Rescue
Devices for Saving Your Bacon,” concisely summarizes
options for being spotted when adrift. While certain devices
such as flashlights, mirrors and folding fluorescent yellow
flags are of assistance, nothing guarantees you will be spotted
and picked up sooner, later, or at all. However, there
are precautions one can take to stay alive and coherent for
two to three days while lost at sea, which theoretically will
significantly increase the probability of rescue or reaching
land. Here are my suggestions for a $20 practical and reliable
survival kit.
The first component is an oversized contractor’s bag
or heavy-duty garbage bag with dimensions about 36 x 58
inches, to reduce heat loss. With fins off, divers of small to
moderate build can place one or two bags around themselves
to shoulder height, tying the open end to BCD straps. I have
experimented with this and it works with knees bent. The
water in the bag will warm up from body heat, and it should
discourage any unwanted attention from sharks because
waving limbs emit vibrations characteristic of wounded prey.
Drawing the top of the bag tight around your shoulders and
neck will further minimize heat loss. The bags fold up compactly
and can be carried within a survival pouch. You can also use one to cover your head to protect against wind, rain,
cold and sun exposure, problems that can contribute to heat
loss, dehydration, and fatigue. Unfortunately, an oversized
diver will not fit in an oversized garbage bag, but an extra
large plastic bag from a source such as industrial wrappings
might be located.
The next items for your survival kit are small screw-top
plastic bottles filled with fresh water, which can be carried in
a pouch or your BCD pockets. Fill the bottles prior to your
first dive; carrying more than one bottle means if you spill
one, you have another. An average-size diver might need as
little as 200 ml. of water per day to excrete wastes on a shortterm
basis. Most divers can comfortably store 500 to 1,000
ml. of water per day for two to three days. Please lift your
own BCD and tank out of the water if you overdo the water
supply, otherwise you will be sacrificing the back of the boathand
for your excessive survival resources.
The final item is power bars, perhaps one per day. They
are light, well wrapped, not prone to going bad, and pack
substantial calories. Also take a piece of aluminum foil;
placed inside your aluminum mask, it can provide a reflective
surface if you face the sun or searchlight. If nothing else,
the observer will be curious to check out a marine creature
with such large reflective eyes. All these items fit in one or
two large zip-lock bags placed in the pockets of your BCD.
Alternatively, a pouch can be clipped onto your buoyancy
compensator to store the survival kit.
What happens if you are stranded with a group and you
are the only one who has read this article? In all my years
of diving, I have never really found a use for a dive knife.
Could this be the first truly valid one?