Tag Archives: Ger Kennedy

The Eastern Bay Swim Club Official Ice Mile attempt – Part 2 Post-swim and analysis

Part 1.

Post-Swim Events

I struggled to get my sandals on, then climbed the steps to my swim box to get changed. It was another struggle, as my swim box wasn’t against the wall on the bench, as the other guys had filled up the space before me pre-swim. Instead it was balanced on the low wall above the steps. And there were people coming and going.

Struggling to get dressed
Struggling to get dressed

Many of my carefully learned post-swim processes and timing slowed.

I’d brought too many post-swim clothes. But I got dressed, putting on ski-pants instead of trousers, easier to pull on and very warm, then received some brief assistance from someone behind me to get the difficult first top base-layer on, as I was struggling with it, as usual. Afterdrop was coming on very hard, worse than usual. I may have taken ten minutes to get fully dressed instead of my usual five to six minutes and I only wore Crocs and Socks instead of shoes. Patrick Corkery shoved my woolly hat on my head.

A severely hypothermic Ger Kennedy being attended to by volunteers
A severely hypothermic Ger Kennedy being attended to by volunteers

The crowds and my position were very difficult, entirely my own fault. I noticed one swimmer being attended to, wrapped in thermal blankets and clothes, surrounded by people, but I didn’t see who it was and I wasn’t focused as I normally would be at such. Only later did Fergal tell me it was Ger Kennedy, who’d been removed from the water a couple of hundred metres from the end after he’d grabbed the kayak and asked for help, unable to swim the final couple of hundred metres.

Patrick Corkery’s brother John-Paul helped me back to his car to rewarm, my car a hundred metres further on must have looked too far, as I was walking somewhat unsteadily. I stayed there in the heat for about 20 minutes. I was quite hypothermic, extremely slowed speech and even cognition. I rang Dee to tell her I was okay, she later said I didn’t sound normal. But do I ever? :-)

Fergal was so comfortable after his swim he had time to speak with one of his fans. He was actually able to speak!
Fergal was so comfortable after his swim he had time to speak with one of his fans. He was actually able to speak clearly, unlike me.

Eventually I moved to my car. Fergal, apparently entirely recovered almost immediately, drove us back to his house for home-made soup and brown bread and cake from his wife Mags. (The joys of open water swimming include how we can eat, returning to that time when we were teenagers and food can at every meal or snack become your entire world, with no guilt, no long-term ramifications).

I left Fergal’s house about two hours from the end of the swim, completely recovered and I had plenty of time to reflect on the way home.

Analysis

As the blood cools, it thickens and slows, the increased viscosity therefore reducing the oxygen available to the brain. Cognition is impaired. It’s why I’ve previously stressed so often the importance of repetition, of learning what you are doing when you are really cold. It’s why we make out safety decisions outside the water, not when we are already cold. It’s why following a plan is important.

When you are hypothermic, you are still you, but you are also very distinctly not you.

In retrospect, it was the second worst hypothermia experience I’ve had, second only to the  Blackwater to Cobh swim in 2007, early in my cold water swimming, when I’d had brief memory loss for ten to fifteen minutes afterwards.

The value of most of what I write here, is that I learn it all myself the hard way, and often make mistakes. And we all know mistakes often have more value than success.

I did complete the swim but it was maybe ~7°, maybe as low as 5.6°, not the necessary 5°, so it wasn’t a failure for me per se, but it was more difficult than I expected. For anyone experienced with cold water, that’s a wide temperature gap, as we all repeat to each other; every degree drop brings a new level of difficulty. This left me asking the question:

  • Why was I so hypothermic afterwards?

At home I checked my swim log: On the 1st of December I’d swim in 7.2° Celsius for forty minutes, by myself, and not been as hypothermic, driving safely away from the Guillamenes after about 40 minutes. Not that I wasn’t hypo, after every swim at the Guillamenes I usually spend about 20 to 30 minutes before I drive home, including the very short but very useful climb up the steps to my car.

Pre-swim everything was done right, I didn’t get cold, I’d eaten enough, I was a little short of sleep but it shouldn’t have been a factor.

I have written on more than one occasion that you can’t out-think the Laws of Thermodynamics, heat will always leave the body in cold water, cold will always win. The rate that heat leaves is based primarily on body size, body fat, cold water experience and movement. The first two are obvious physically limiting factors, the third doesn’t seem to be but is also.

Recapping the three aspects:

  1. The larger the body, the greater the ratio of volume to surface area, so the slower the heat-loss. It’s why Polar animals are large, for example.
  2. Fat is obviously an insulator specifically designed by nature to protect from cold.
  3. As experience in cold water grows, heart-rate and stress hormones decrease, blood is not being pumped as quickly internally so heat loss is slowed.
  4. I was swimming hard(-ish).

Since I have plenty of experience, and I wasn’t stressed about the swim, the problem could likely to be in the first two items. And this is where the big change has been with me recently.

Loneswimming
Loneswimming

Here’s that picture of me from last autumn, pre-Coumshingaun swim.

I’m not the tallest of people, 170 centimetres. No change there except as I get older, I must be starting to shrink! No, the fact is that since November I’ve lost about seven kilograms. In fact I am lighter than I’ve been in at least four years, having dropped below my pre-Channel training weight. My winter swimming weight pre-Channel used to be about 75 kilos, whereas I’m now about 73 kilos.

No disrespect to my fellow swimmers, but I am somewhat significantly smaller than all of them. Only Ger is anywhere near my weight but probably still 10 kilos heavier. I’d guess the other four of them had 20 to 30 kilos of weight advantage on me.

IMG_0152.resizedAbove is a photo of me greasing-up taken before the Ice-mile attempt. Since I didn’t know it was being taken, there was no belly-sucking, though I guess my torso is stretched, but both photos are from the side. I was genuinely surprised looking at the second photo how apparent the weight loss was (to me anyway).

Checking my log again, five days before that 7.2° swim in December, I was still 76 kg, three kilos heavier than now.

The other significant difference with Saturday’s swim was that I was actually swimming harder than my usual winter swims. That meant higher blood flow. I don’t know how to calculate the offset there. Swimming faster burns more energy and therefore produces more heat. But ironically that could have meant a greater exposure of warmed blood at the surface so it would cool quicker. I have no idea how to calculate the balancing factor here, but my feeling based on experience is that it was probably the smaller part of the story but at the same time, still important.

There’s yet another important factor: Colm was first out of the water at about 26 minutes. I was about 34 minutes. 34 minutes for 1600-odd metres is really really slow and I was swimming fast. And 26 minutes for 1600m is slow, especially for Colm. The return leg had taken us twice as long into the flood tide as the outward leg. All this indicates the strength of the flood tide we were swimming back against. Not the very best conditions if I was marginal on cold-exposure at that temperature.There could have been ten minutes extra swimming time. And remember also that I missed the turn, which probably added at least a minute. At this temperature spending extra time in the water wasn’t the optimum situation for me.

And I made another mistake. Earlier in the week I’d hoped to stay in the Dublin the previous night and hopefully have my sister accompany me, but she was working. Prior to the swim I should have taken a better changing location, knowing how hard it can be from experience AND I should asked for a designated person whose function was to help me dress afterwards.

I said to Fergal on Sunday that it felt like low 6° to me. A few days later Patrick Corkery told me he measured 6.7° out in the water on his watch, and swim watches almost invariably read a degree higher, even in very cold water, due to body heat (enough that swimmers often adjust for this). This puts the temperature potentially much closer to 5.5°.

So there you have it. I did the swim. I struggled afterwards. I made mistakes. Some factors were out of my control, some weren’t. At my current weight swimming in a temperature of three or four degrees for a sustained time is probably beyond me, but five might be possible.  The official Ice Mile is still waiting for me. 

Next time?

Next time I’d designate my helper.

Next time I’ll be more sure of the turning point.

Next time I’ll avoid flood tides for this type of swim.

Next time. 

Thanks to Fergal and John, Eastern Bay Swim club, Dublin Sea-Scouts, the other swimmers and all the volunteers who assisted.

It’s worth closing with a comparison, and a warning. The day before this swim Finbarr Hedderman and Rob Bohane of Sandycove Island Swimming Club, two of the world’s finest *cold open water* swimmers swam 600 and 800 yards respectively in Totting Bec in 1.8C°. Speaking with Rob some days later, he’d suffered some nerve damage, having developed constant pins and needles in his fingertips. Lewis Pugh on his zero degree Antarctic mile suffered fingertip nerve damage that took 6 months to heal.

I’m not all about constant warnings here, I only give the occasional one. But cold water is dangerous. Almost all these people in Dublin and Tooting Bec are very experienced cold water experts . I try to give you as much information as I possibly can about cold swimming to help you. (In fact I don’t think you’ll find more anywhere else). But there is still risk. I’m not telling you shouldn’t take risks, but try to balance the risks with your capabilities. That point where risk and capability pivot about each is different for everyone.

Eastern Bay Swim Club Official Ice Mile attempt – Part 1, the swim.

Most of the Sandycove Island Swimming Club were away in London at Tooting Bec Lido for the British Cold Water Swimming Championships at the weekend, living it up in the 1.8° degree Lido water.

Earlier in the week however, Dublin English Channel soloist, and North Channel Aspirant Fergal Somerville circulated an email from himself and fellow Dublin English Channel soloist John Daly, looking for anyone who was interested in making an official ice-mile attempt in Dublin Bay run by his club, the Eastern Bay Swimming Club. (Anyone that is, who was regularly swimming in cold water and had a good swim record).

Along the Bull Wall, into Dublin Bay
Along the Bull Wall, into Dublin Bay

And so it was that six of us assembled, with a veritable army of helpers and Doctors, volunteers, Sea-Scouts and safety crew, film-crew and photographers, well-wishers and looky-loos, at the outermost shelter on Dublin’s Bull Wall in Dublin Bay on Saturday morning.

The requirements for an official ice-mile are pretty straight-forward: 1600 metres in water that must measure 5° Celsius or less, verified using three different submerged thermometers, 30 centimetres under the surface. Swimmers swim under English Channel regulations; single cap, goggles and swimsuit, with lubrication sufficient only to protect against chaffing. The swimmers also must provide an ECG taken within 30 days before the swim.

The weather was very cold here for the previous two weeks but water temperatures had risen on the south coast. The previous Saturday’s swim at the Guillamenes was 8.6° Celsius, but the east coast of Ireland is always colder, and Fergal and John had measured 4° C the previous Saturday. However during the week safety officer and English Channel soloist Ger Carty measured the water at 6° C.

The morning was bright and cloudless on the Bull Wall, which runs from out in Dublin Bay back along north-easterly along Bull Island, marking the northern edge of Dublin Port harbour. Across the harbour is Dublin Landmark the Pigeonhouse power station. Measurements on Saturday morning indicated a temperature of 7° to 7.2° Celsius, well above the required mark, but there was no thoughts of us not swimming, treating it at least as a training swim.

Pigeonhouse Power station
Pigeonhouse Power station

I’d slipped off a rock while taking a photo for my blipfoto account earlier in the week and bruised my ribs and hadn’t been able to swim much in the pool, as I was hurting on  tumble-turns, push-offs and  backstroke, all aspects of swimming which luckily I didn’t need for open water.

I’d eaten enough that morning, and while my night’s sleep was shortish, it should have been sufficient.

Looking south across the harbour from above the Bull Wall toward the twin chimney's of Dublin's Pigeon House Power Station
Looking south (up) across the harbour from above the Bull Wall toward the twin chimney’s of Dublin’s Pigeon House Power Station

The swim was to be back along the Bull Wall toward the city, to just past the Golf Club. There were plenty of Sea-Scouts on kayaks and a safety boat also, and volunteers walking along the path watching us. The turn was to be just past the Golf Club and indicated by a flag on the wall.

The swim route. Nothing much to see here.
The swim route. Nothing much to see here.

At 10am we assembled in the easternmost shelter at the end of the wall to get ready and assembled on the steps at just before 10.10 am. I’d greased slightly under my arms, something I’ve haven’t been doing for  my recent swims, I seem to have finally gotten over the need to prevent chaffing for swims under 30 minutes, but I didn’t want any possibility of getting chaffed if I was really cold. The six swimmers were organisers John and Fergal, myself, Ger Kennedy and Colm Breathnach and Patrick Corkery, (Ger being the only one I didn’t really know), but all experienced open water marathon swimmers. We lined up for a photo beforehand, I was on the far side of the railing and struggled to peek out from behind The Wall of Men.

A wall of men. Big men. Manly men. What the hell am I doing behind there?
A wall of men. Big men. Manly men. What the hell am I doing behind there? From left to right; Colm, Fergal, myself peeking out, Patrick, Ger, John.

The water down along the wall was rippley but fairly flat. The air temperature was 4° C but the breeze felt cold and the wind-chill surely dropped the perceived temperature to about zero.

I’d been a bit nervous for a couple of hours the previous day, before I got over it. Sure the local temperature I’d been swimming in was higher and I hadn’t been training specifically for this swim, but I was as always swimming in the sea every weekend and I’d wanted to try this for a few years with no opportunity. I’d even had a sketchy swim only two weeks previously when a combination of wind strength and direction, swell and tide turned a 30 minute swim into a stern battle, that had been an appropriate training swim for this.

I felt confident beforehand, nice and calm, no internals symptoms of anxiety that would elevate my heart rate and make me get cold quicker than normal. We all entered the water just after 10.10.

The water was cold of course but nothing exceptional. No searing sinus pain, which tends to happen me when the temperature is six degrees or lower. Hands and feet were cold but not immediately on fire, no extreme gasping. All was good.

The swim group IMG_0183-resized

The group stroked off down the wall, Patrick out in front, Colm, a former national 400m champion, and probably one of the fastest open water swimmers in the country, quickly catching and passing the group. Fergal, Ger, John and myself together in a group before Fergal and I went to the front of the four, and swam shoulder to shoulder for a couple of hundred metres.

On the Bull wall there were plenty of people, volunteers and helpers and bemused morning walkers.

Fergal and kayaker
Fergal and kayaker

I felt great, swimming nice and strongly, breathing only to my right instead of bilaterally, to allow me put a bit of extra effort in. When I swim by myself most winter weekends, I just cruise. I rarely swim for speed, except for the final few hundred metres sprint. This time, I had upped my tempo a bit. Fergal and separated and he swam closer toward the shore and we each had picked up separate Sea-Scout kayakers. The water was very murky and sandy and my watch wasn’t visible, so I hadn’t been able to check time for the first five minutes elapsed. I hadn’t even started to look for the Golf Club or turn flag, when I realised I had passed someone on the wall waving 25 or 50 metres, and had paid no attention. Now the kayaker was shouting at me, which of course I couldn’t hear with my ear plugs in. I’d swum right past the turn point. I stopped and checked with the kayaker, and turned back. That was fast! Fergal told me afterwards we’d reached the 800 metres turning point in less than 12 minutes. Now turned, everyone was in front of me, heading back to the shelter.

Donal, left, and Fergal, right
Donal, left, before the turn, and Fergal, right, after the turn

My hands and feet were by now feeling painful, but not to the extent of the almost unbearable pain that occurs to me at around 5 degrees, the thermoceptors, the cold-receptors in my skin enervated but not quite overloaded.

I paid no attention to trying to catch anyone, I wasn’t treating this as a race, just concentrated on swimming, in case I forgot how. I was still breathing to my right so now I looking across the bay past the kayaker to the well-known twin chimney’s of the Pigeonhouse Power Station and the city and Wicklow Mountains beyond, the peaks still snow-covered after the foul weather all week.

After a long period I decided on a forward position check. There was a changing shelter on the shore coming up. It wasn’t the larger one at the end of the wall that we’d started from, but there was another one a few hundred metres beyond, hopefully that would be the end. Head down again I swim on. Next check I had still not arrived at the next shelter. Another swim, another check. The shelter was clear but it  wasn’t the end.

What i hadn’t realised, and was only apparent afterwards when I looked at Google Earth, is that there are only three shelters along the wall. After the very quick first half returning toward the start was much slower, and just getting to the first of the three shelters, only 300 metres past the turn took almost as long as the first half of the swim. Usually you can feel when you are being slowed by a current, but when the location is new and the water is cold it’s not always apparent. I still felt I was swimming quickly, but didn’t realise how much the incoming tide had slowed my return.

Colm finishing first
Colm finishing first

The swim continued as a plod onwards, hands and feet still painful but still manageable, fingers still in control. The last shelter finally became apparent, the white vinyl banner of Eastern bay Swim club on the railings visible.

Fergal & Pat
Fergal & Patrick

300 metres, 200 metres. I engaged my kick a bit more strongly. Slow progress. My hands hadn’t Clawed, I didn’t feel blown. And then the strangest thing happened. I noticed what looked like black dots in the sky when I looked skyward on my breathing.  Calling them black spots in front of my eyes would a bit too strong but very definitely noticeable and they were there for the final 100 metres. So I reached the railings, and exited the water.

In Part Two, after the swim and post-swim analysis.

Donal
Donal, always wearing my CS&PF Channel cap
John Daly -resized
John – photo of the day I think, he looks totally unphased