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This should be a "hot" topic for winter for rowers in every temperate
climate. I will apologise in advance that for some this may be TL;DR
In particular, it should be a prime consideration for clubs with young
(& elderly) rowers. I & others are on record advocating compulsory
cold-weather kit for <18s, to comprise high-visibility multilayer
clothing, to be worn when air &/or water temperatures are below 10C - in
such as the USA that'd be a 50/50F rule, & a 10/10C rule in metric
countries.
The inclusion of a non-impeding PFD/lifejacket giving sufficient
buoyancy to keep a swimmer's head above water ought not to be too
tricky. I also understand that there are a number of very acceptable
(for rowing use) PFDs on the market.
The problem we should address is that in cold water a swimmer loses body
heat up to 50x faster than in still air at the same temperature, much of
it from arms & legs (which have high surface to volume ratios). The
brain quickly responds to this heat loss by restricting limbic blood
circulation in its effort to sustain blood temperature & circulation for
the vital organs, including itself.
But with circulation to arms & legs thus restricted, their strength &
power are severely curtailed & you soon lose the ability to swim, even
to tread water. So without some support, hence the PFD, & without
rescue you'll be unable to reach safety & will very probably slip under
& drown. That may happen faster if you were working hard at the point
of immersion as you may then gasp, suddenly exhale, & then draw a small
amount of water into your now compacted lungs - when a muscular spasm
which can prevent all passage of air in or water out.
The advantage of close-fitting multilayer clothing is that it retains
many thin layers of air or water which, as it is not flowing, form a
highly effective thermal insulant. Of course, rowers (especially
younger ones) will complain about getting hot, but they'll never get as
hot in a properly-designed winter kit as when rowing or training at
25C/77F in strong sunlight (which reflects back off the water too).
Mandatory winter kit like this can be really smart & strikingly visible,
great in a sport which has become somewhat obsessive about its image. I
have previously urged rowing's NGBs to take it on as a real advance in
young rower safety but also, cynically, as "a nice little earner". I'm
still waiting.
The UK authorities should have grasped this nettle after the tragic
death of a young sculler in the Thames at Reading on 2 January 2005.
Sikander was lightly clad. Air & water temperatures were both about
5-6C. He capsized his single. He was told from the bank to swim to the
bow of his boat & tow it to the far bank - as was then official advice.
But those who make up rules rarely test their advice on themselves! The
bow of a single gives a swimmer no support, & towing it slows you down.
As you chill, your grip rapidly declines & panic is probable. Close to
the bank, Sikander struck out in desperation. He did reach the bank but
was unable to scale it to safety. No other sculler in the vicinity was
in a position, or knew how, to intervene to help him. He slipped back,
went under & drowned.
Sadly, officialdom went into self-defence, image preservation mode.
Statements were issue which dumped the blame on the victim "for leaving
his boat". A sadly typical response, which ensures that the danger
remains unaddressed.
A number of us did our best to change the official mindset &
instructions on self-rescue. We developed the Paddle-&-Straddle
self-rescue method.
Paddle-&-Straddle recognises that in cold water you lose strength so
rapidly that you have a very short window of opportunity before becoming
the potential victim. By all means make one serious attempt to get back
into the boat. But doing that requires significant strength & reserves,
& the first attempt will erode both. What you can best do, & can
achieve if you don't delay, is to leave the boat inverted & haul
yourself onto the middle of its upturned hull - it will still be
perfectly buoyant & able to support your spread-eagled body with all its
vital bits clear of the water. And even if you lose consciousness
through exposure, you'll still be readily visible for rescuers. But, if
instead you've made several failed attempts to right & re-occupy your
boat, you may then lack the strength even to straddle it, so please
don't mess about like that.
Once flopped over the upturned boat you have many advantages over the
person who swam to the bow & started towing the boat to the bank.
1. You can doggy paddle to safety, probably faster than you can swim,
despite the oars & riggers in the water
2. Your rate of heat loss is massively reduced.
3. You are visible (swimmers are easily missed).
4. If you do lose consciousness, you won't drown & can still be rescued,
long after you'd have drowned as a swimmer.
I know that this is under discussion right now with USRowing. I hope it
will get serious consideration right now in the N Hemisphere & be
considered meanwhile in the Southern ditto. And water needn't be very
cold to present a severe danger to an unsupported swimmer.
Please consider -