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Thursday, May 26, 2011

How Do You Measure Open Water Swims?

Some people claim and many media reports state certain distances across the English Channel and other marathon swims around the world. Often, these reported distances are longer than the accepted straight-line distance accepted by the global open water swimming community. Sometimes much longer.

No one can swim perfectly straight from point to point due to imperfect swimming technique, currents, tides, waves, surface chop, swells, fog, poor visibility and other factors.

Fortunately, with modern-day GPS technology and handy tools like Google Earth, measuring a course is quite easy and accurate.

But documenting a swim should be based off the shortest straight-line tangent between the the start and finish. In other words, if the shortest distance between the start and finish is 10 kilometers, but a swimmer drifts 2 kilometers, the swimmer is properly credited with a swim of 10 kilometers - not 12 kilometers.

This is common whether the swim is across the English Channel, a shoreline swim or a marathon swim of any type.

Plain and simple, swimmers go off-course. This is without a doubt. But the global open water swimming community also stresses and accepts that the straight line tangent is the standard form of measurement in their sport.

Chris Guesdon of the International Marathon Swimming Hall of Fame reiterates, "Straight line point-to-point is the only way to measure all swims. It is irrelevant where the wind, tides or currents take the swimmers. The question should always be, 'Did you complete the task, starting point to finishing point, and how long did it take?' An English Channel crossing is the best example. It’s England to France, without assistance, with an independent observer [to verify the swim]."

John Dussliere, an American Olympic swimming coach, also agrees, "Straight line tangent is the only way to standardize the distance. Otherwise, swimmers would have to follow another swimmer’s path in order to beat their time and set a record. Marathon swimming is about braving the elements and the swimmer’s ability to time the currents, navigate and handle the elements that can be measured against others."

Liz Fry, race director for the Swim Across the Sound and a Triple Crown swimmer herself also explains other perspectives, "The straight-line tangent distance is the most normalized measure of the distance, similar to sailboat races. Speed is gained by adding distance and 'tacking' into the current/tide. The sea conditions, currents, tides and weather are all part of the sport and need to be planned for as best as possible. GPS provides interesting data for the swimmers and their pilots, but I see it more as a navigational tool during the swim for real-time adjustments based on swim conditions and swimmer speed [rather than a means to measure the distance of the swim]. If the search is for actual swimming distance, it will be complicated since consideration would have to be given to both horizontal and vertical distance. We would need to find a method to account for wave height in the distance as well."

Jim Barber, another Triple Crown swimmer, brings up another complication, "Measuring point A to point B is the way to go. We can’t start measuring what a swimmer swims in total distance because this becomes way too subjective for readings and measurements."

Captain Tim Johnson of the International Marathon Swimming Hall of Fame and author of the book, The History of Open-Water Marathon Swimming, agrees and brings up a different point about land-to-land and staged swims. "The straight line distance should be used unless there is a land mass that a swimmer or boat would have to deviate around in which case it would be the shortest swimming distance going around the deviation. If a swimmer starts or finishes from an in-the-water point, I could consider a swim where the start or finish was located in the water adjacent to land where adjacent means within sight and hearing of spectators. Using a navigational buoy is a useful substitute because they are marked on charts. GPS is great for finding locations and I used it on Skip Storch’s swim down the Hudson River which was a staged swim. Skip would pick up his swim from a point behind where he left off the previous stage (day) and use GPS to mark the finish of a stage in order to use for resuming the swim the next time. GPS uses a reference to an imaginary grid laid over the earth and, as such, there are an infinite number of locations. The issue with records is they have to be repeatable so another person can attempt to break a previous record so the starting location is key. Before GPS there was Loran, but no one used or claimed a record based on Loran readings as far as I know."

In summary, governing bodies, swimmers, coaches, administrators and media representatives should use the straight-line distance measured in kilometers, statute miles or nautical miles. Using any other means of measurement simply confuses the situation.

Copyright © 2011 by Open Water Source

1 comment:

  1. From time to time I hear/read people say that they had to swim more miles because of the tide. Assuming the swimmer swims in a straight line in the direction of the closest opposite shore, it matters not if the tide pushes you up and down the Channel. For example, if a GPS reads 30 mile covered, and your pilot lands you at the closest opposite shore, the additional distance is just how far the tide took you. If your heading stays perpendicular then you only swam a distance equal to the shortest distance. However, if you land in a some other place, that is an entirely different matter.

    ReplyDelete

Thank you very much for your interest in the world of open water swimming.

The Staff of the World Open Water Swimming Association

2014 Global Open Water Swimming Conference

Learn more...
Courtesy of WOWSA, Huntington Beach, California.

2014 Global Open Water Swimming Conference Agenda


Friday, 19 September

5:30

PM


Welcome Reception at Mount Stuart House, Isle of Bute, Scotland

Documentary films shown throughout the reception:

Blue Journey-Amerika Samoa – Stronger Together: The Waterman’s Way
(film by Bruckner Chase)

Dancing With The Water, Crossing of Lake Pontchartrain
(film by Wayne Ewing about Matthew Moseley's Lake Pontchartrain crossing)

Bering Strait Swim Chukotka - Alaska
(film by Admiral Konstantin Sidenko about the relay between Russia and Alaska)

The Clean Swim – Hong Kong to Macau
(film about Simon Holiday's Pearl River Delta crossing)


Saturday, 20 September

9:00

AM


Registration and Coffee at Mount Stuart House, Isle of Bute, Scotland

10:00

AM


Keynote Speech:
Colleen Blair (Scotland) on The History of Scottish Swimming

10:20

AM


Christopher Guesdon (Australia) on Multidimensional Roles In The Sport

10:30

AM


Colin Hill (England) on Recent Explosion in UK Open Water

10:50

AM


Shelley Taylor-Smith (Australia) on The Feminine Code of Achievement - How a Lady from Down Under Revolutionized Professional Marathon Swimming

11:10

AM


Simon Murie (England) on Open Water Swimming Holidays: How A New Sector Was Created Within The Travel Industry

11:30

AM


Swimming The Oceans Seven
A round table discussion moderated by:
Kevin Murphy (England), with Stephen Redmond (Ireland), Anna-Carin Nordin (Sweden),
Darren Miller (USA), Adam Walker (England), Kimberley Chambers (New Zealand)

12:30

PM


Coffee and Break

1:00

PM


World Open Water Swimming Awards Luncheon:
with co-hosts Shelley Taylor-Smith (Australia) and Steven Munatones (USA)

Pádraig Mallon (Ireland), 2013 World Open Water Swimming Man of the Year

Olga Kozydub (Russia), 2013 World Open Water Swimming Woman of the Year

Bering Strait Swim, 2013 World Open Water Swimming Performance of the Year

Honoring: Vladimir Chegorin, Maria Chizhova, Elena Guseva, Ram Barkai, Jack Bright, Oksana Veklich, Aleksandr Jakovlevs, Matías Ola, Henri Kaarma, Toomas Haggi, Nuala Moore, Anne Marie Ward, Toks Viviers, Melissa O’Reilly, Ryan Stramrood, Cristian Vergara, Craig Lenning, Rafal Ziobro, Andrew Chin, Jackie Cobell, James Pittar, Paolo Chiarino, Mariia Yrjö-Koskinen, Ivan Papulshenko, Zdenek Tlamicha, Zhou Hanming, Oleg Adamov, Andrei Agarkov, Alekseev Semen, Tatiana Alexandrova, Roman Belan, Elena Semenova, Alexander Brylin, Afanasii Diackovskii, Vladimir Nefatov, Evgenii Dokuchaev, Oleg Docuckaev, Roman Efimov, Dmitrii Filitovich, Olga Filitovich, Victor Godlevskiy, Olga Golubeva, Alexei Golubkin, Alexander Golubkin, Alexandr Iurkov, Oleg Ivanov, Pavel Kabakov, Eduard Khodakovskiy, Aleksandr Komarov, Aleksandr Kuliapin, Andrey Kuzmin, Irina Lamkina, Vladimir Litvinov, Andrey Mikhalev, Victor Moskvin, Nikolay Petshak, Sergey Popov, Vladimir Poshivailov, Grigorii Prokopchuk, Dmitrii Zalka, Natalia Seraya, Viacheslav Shaposhnikov, Olga Sokolova, Andrei Sychev, Alexei Tabakov, and Nataliia Usachaeva [represented by Admiral Konstantin Sidenko and Nuala Moore]


2:30

PM


Alexey Salmin Pavlovich (Russia) and Dmitry Dragozhilov (Russia)
on the 2016 Winter Swimming World Championships [film]

2:50

PM


Sally Minty-Gravett (Jersey) on Motivating Swimmers

3:10

PM


Dmitry Blokhin (Russia) and Aleksei Veller (Russia)
on the First World Ice Swimming Championships [film]

3:30

PM


Matthew Moseley (USA)’s Dancing With The Water, Crossing of Lake Pontchartrain [film]

3:50

PM


Simon Holliday (England) and Doug Woodring (Hong Kong)’s The Clean Swim – Hong Kong to Macau 2014 [film]

5:00

PM


International Swimming Hall of Fame (ISHOF)
and International Marathon Swimming Hall of Fame (IMSHOF)

IMSHOF Induction Ceremonies and Dinner
with co-hosts Shelley Taylor-Smith (Australia) and Steven Munatones (USA).

Recognition of International Swimming Hall of Fame honorees:

  • Elizabeth Fry (USA), IMSHOF Honour Swimmer

  • Vojislav Mijić (Serbia), IMSHOF Honour Swimmer

  • James Anderson (USA), IMSHOF Honour Administrator

  • Dr. Jane Katz (USA), IMSHOF Honour Administrator

  • Indonesian Swimming Federation Open Water Committee (Indonesia), IMSHOF Honour Organisation

  • Melissa Cunningham (Australia), Irving Davids – Captain Roger Wheeler Award by the International Swimming Hall of Fame and IMSHOF Honour Swimmer

  • Sandra Bucha (USA), ISHOF Honor Open Water Swimmer and IMSHOF Honour Swimmer

  • Jon Erikson (USA), ISHOF Honor Open Water Swimmer and IMSHOF Honour Swimmer [represented by Sandra Bucha]

6:30

PM


International Swimming Hall of Fame (ISHOF) Introduction Video.
Welcome speech by host Shelley Taylor-Smith (Australia)

6:45

PM


Dinner

7:30

PM


International Swimming Hall of Fame (ISHOF)
Induction Ceremonies and Dinner with host Shelley Taylor-Smith (Australia)

Recognition of International Swimming Hall of Fame honorees:

  • Mercedes Gleitze (England)
    ISHOF Honor Pioneer Swimmer and IMSHOF Honour Swimmer
    [represented by daughter Doloranda Pember]

  • Dale Petranech (USA)
    ISHOF Honor Contributer and IMSHOF Honour Administrator

  • Claudio Plit (Argentina)
    ISHOF Honor Open Water Swimmer and IMSHOF Honour Swimmer
    [represented by Shelley Taylor-Smith]

  • Judith van Berkel-de Nijs (Netherlands)
    ISHOF Honor Open Water Swimmer and IMSHOF Honour Swimmer
    [represented by Niek Kloots]

  • George Young (Canada)
    ISHOF Honor Pioneer Swimmer and IMSHOF Honour Swimmer
    [represented by the Catalina Channel Swimming Federation]

  • David Yudovin (USA)
    ISHOF Honor Open Water Swimmer and IMSHOF Honour Swimmer


Sunday, 21 September

9:00

AM


Registration and coffee at Mount Stuart House, Isle of Bute, Scotland

10:00

AM


Nuala Moore (Ireland) on The Mindset of 1000m at 0ºC

10:20

AM


Admiral Konstantin Sidenko (Russia)’s Bering Strait Swim Chukotka - Alaska in 2013 [film]

10:40

AM


Ned Denison (Ireland) on Swimming The World

11:00

AM


Bruckner Chase (USA)’s Blue Journey-Amerika Samoa
Stronger Together: The Waterman’s Way
[film]

11:20

AM


Rok Kerin (Slovenia) on Lifestyle Benefits From Open Water Swimming

12:00

PM


Survey distribution and group photo-taking

2:00

PM


Swim at Stravvana Bay, Isle of Bute






CLICK HERE TO REGISTER FOR THE CONFERENCE

The Global Open Water Swimming Conference is a conference on the sport of open water swimming, marathon swimming and swimming during triathlons and multi-sport endurance events.

The conference which has been attended by enthusiasts and luminaries from 6 continents, is devoted to providing information about the latest trends, race tactics, training techniques, equipment, psychological preparation, race organization and safety practices used in the sports of open water swimming, marathon swimming and triathlons.

The conference's mission is to provide opportunities to listen and meet many of the world's most foremost experts in open water swimming, and to meet and discuss the sport among swimmers, coaches, administrators, event organizers, sponsors, vendors, officials, escort pilots, and volunteers from kayakers to safety personnel.

Dozens of presentations at the 2014 Conference at the Mount Stuart House cover numerous aspects of the vast and growing world of open water swimming where attendees can learn and share the latest trends, race tactics, training modalities, swimming techniques, equipment, race organization, logistics, operations, and safety practices for open water swimming as a solo swimmer, competitive athlete, fitness swimmer, masters swimmer, triathlete, multi-sport athlete, administrator, race promoter, sponsor or referee.

The conference was first held in Long Beach, California as part of the 2010 USA Swimming National Open Water Swimming Championships. It has since been held on the Queen Mary in California, at Columbia University and the United Nations in New York City, and in Cork, Ireland. This year in September, it comes to another iconic location, the Mount Stuart House on the Isle of Bute in Scotland.

"The Global Open Water Swimming Conference was started due to the desire and need for athletes, coaches, referees, administrators, race directors, promoters and sponsors from around the world to share, collect and learn information about the growing sports of open water swimming, marathon swimming and triathlons," said founder Steven Munatones. "Other swimming conferences usually offering nothing on open water swimming or perhaps a speech or two, but we thought open water swimming deserves its own global conference. It is great that the community shares its information via the online social network, but there is nothing like meeting other open water swimming enthusiasts face-to-face and talking about the sport from morning to night."

Speakers at the conference include English Channel swimmers, ice swimmers, record holders, renowned coaches, world champions, professional marathon swimmers, renowned race directors, officials and administrators from the Africa, Americas, Asia, Europe and Oceania.

"Because the audience is passionate and educated about the sport and its finest practitioners, the Global Open Water Swimming Conference is also the location of the induction ceremonies for the International Marathon Swimming Hall of Fame and the annual WOWSA Awards that recognize the World Open Water Swimming Man of the Year, the World Open Water Swimming Woman of the Year, the World Open Water Swimming Performance of the Year, and the World Open Water Swimming Offering of the Year. Special Lifetime Achievement Awards are also occasionally presented to individuals who have made significant contributions to the sport over their career."


Copyright © 2014 by World Open Water Swimming Association

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