"Marc Heusser" d wrote in
message ...
In article ,
Marc Heusser d
wrote:

http://www.tc.gc.ca/MarineSafety/TP/TP13822/menu.htm

From the conclusions:

...
Even a lifejacket, if not worn properly or without a spray hood, does
not guarantee the victim protection from drowning.
...
Even with rescue resources on scene when the people went into the water,
the shock of the cold water and period of time these people were in the
water proved significant in this casualty.
...
From all the combined research on cold water accidents and scientific
research, it has become clear that sudden immersion in cold water, i.e.
below 15°C is very dangerous, it should be avoided if at all possible.
Furthermore, a conscious decision to swim (and rescue oneself) or stay
floating still in the water should not be taken lightly without
assessing the pros and cons. It has now been shown that a person¹s
swimming ability in warm water bears no relationship to that in cold
water.
...
Wherever possible, entry into water below 15°C should be avoided. Direct
entry into a life raft should be the objective.
...

So the old saying that you should never leave a boat unless it leaves
you is still the essence - and having a spare "boat".

HTH

Marc

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In principle I agreed with you.
Your statement "Wherever possible, entry into water below 15°C should be
avoided. Direct
entry into a life raft should be the objective."

Direct entry into the life raft requires you to jump into the water first.
By the time you are in the life raft (depending on your ability and physical
condition) it could take anywhere from 2 minutes to 15 minutes and more. In
the Bay of Fundy the water temperature is always 40F (about 4C) all year.
By the time you are in the life raft you may well be subject to acute
hypothermia.
Last month during our yearly training we concluded that wearing your
survival suit before jumping into the water to get into the life raft could
safe your life.

....

wrote in message
...

"Marc Heusser" d wrote
in message ...
In article ,
Marc Heusser d
wrote:

http://www.tc.gc.ca/MarineSafety/TP/TP13822/menu.htm

From the conclusions:

...
Even a lifejacket, if not worn properly or without a spray hood, does
not guarantee the victim protection from drowning.
...
Even with rescue resources on scene when the people went into the water,
the shock of the cold water and period of time these people were in the
water proved significant in this casualty.
...
From all the combined research on cold water accidents and scientific
research, it has become clear that sudden immersion in cold water, i.e.
below 15°C is very dangerous, it should be avoided if at all possible.
Furthermore, a conscious decision to swim (and rescue oneself) or stay
floating still in the water should not be taken lightly without
assessing the pros and cons. It has now been shown that a person¹s
swimming ability in warm water bears no relationship to that in cold
water.
...
Wherever possible, entry into water below 15°C should be avoided. Direct
entry into a life raft should be the objective.
...

So the old saying that you should never leave a boat unless it leaves
you is still the essence - and having a spare "boat".

HTH

Marc

--
remove bye and from mercial to get valid e-mail
http://www.heusser.com

In principle I agreed with you.
Your statement "Wherever possible, entry into water below 15°C should be
avoided. Direct
entry into a life raft should be the objective."

Direct entry into the life raft requires you to jump into the water first.
By the time you are in the life raft (depending on your ability and
physical condition) it could take anywhere from 2 minutes to 15 minutes
and more. In the Bay of Fundy the water temperature is always 40F (about
4C) all year.
By the time you are in the life raft you may well be subject to acute
hypothermia.
Last month during our yearly training we concluded that wearing your
survival suit before jumping into the water to get into the life raft
could safe your life.


I would like to add another comment concerning life raft.
The probability of the life raft to open as it touches the water is very
good.
However, how many sailboat owners have their life raft inspected every year
and carry out the regular maintenance?
Having a survival suit is a good thing. But you have to be able to get into
the suit quickly. This requires practice.
We have learned that the best way to put your survival suit on is to do it
while sitting on the floor. Better to do it ahead of time.

In article ,
wrote:

In principle I agreed with you.
Your statement "Wherever possible, entry into water below 15°C should be
avoided. Direct
entry into a life raft should be the objective."

Actually it was the statement from the mentioned report, not mine.

Direct entry into the life raft requires you to jump into the water first.
By the time you are in the life raft (depending on your ability and physical
condition) it could take anywhere from 2 minutes to 15 minutes and more. In
the Bay of Fundy the water temperature is always 40F (about 4C) all year.
By the time you are in the life raft you may well be subject to acute
hypothermia.

Worse, much worse, if you read the report:
You could die of a heart attack immediately entering the water, and you
could loose all your force within minutes to grab a rope etc.

As the report is based on analysis of real events I tend to take it
seriously (also my medical training suggests that it is sound advice).

The report strongly recommends agains entering the water at all, if
anyhow possible. Of course a survival (dry) suit helps.

I do hope never to be in that (real) situation ;-)

And training entering 4C water without survival suits is most likely
plain dangerous.

Marc

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