DNOWS Header

Image Map

Sunday, July 15, 2018

It's Complicated

Courtesy of WOWSA, Pacific Ocean.

Swimmers trying to cross the Tsugaru Channel between Honshu and Hokkaido in northern Japan [see image on left] frequently encounter eddies, swirling circling current of ocean water. These eddies either serve to delay or - at worse - lead to a channel crossing being stopped. Winds, the prevailing Tsugaru Current moving from west to east from the Sea of Japan to the Pacific Ocean, and the topography of the Japanese land mass on either side of the Tsugaru Channel lead to the creation of these currents.

Now imagine a much stronger and larger eddy in the middle of the Pacific Ocean. This is what Ben Lecomte is currently facing nearly 500 nautical miles off the eastern shores of Japan at the edges of the Kuroshio Current.

The Kuroshio is a warm-water current (with an average temperature of 24°C) that is about 100 km wide that produces frequent small to meso-scale eddies.

Those eddies can cause Lecomte and his team considerable problems, but yesterday was a good day.

Paul Lecomte explains, "We finally got back to the starting point this morning. The sea was very calm and we were able to do a full good session of swimming paced by the kayaker. We saw our usual whales - big ones - but we are crossing an area with a pretty high concentration of trash."

But the Lecomte's currently find themselves near the edges of the Kuroshio Current, a position that can present major navigational and logistical issues. In this area, it can take several hours for the escort boat to return to the specific point of exit the day before due to the oncoming current and winds. But if the team gets out of the current, then forward progress towards San Francisco becomes much more difficult. And if they get caught in eddies, then progress by the swimmer and boat becomes increasingly difficult.

Lecomte is being naturally pushed northwards due to the winds and currents so heading south is troublesome. On the other hand, going along a more northernly route may lead to significant drops in water temperature.

Copyright © 2008-2018 by World Open Water Swimming Association

A Thank You Gift from WOWSA


WOWSA is celebrating the
1-Year Anniversary of the monthly Open Water Swimming Magazine
by giving you a free copy of the anniversary issue.

Open Water Swimming Magazine Anniversary Issue
File Size: 13MB

FREE DOWNLOAD

INSTRUCTIONS:
Download the file to your computer, and then right-click to extract the magazine which is inside the zip folder. The magazine is in PDF format.

CLICK HERE to download your free copy now.

Open Water Swimming Magazine


Open Water Swimming Magazine

The Open Water Swimming Magazine is the monthly magazine entirely focused on open water swimming heroes and heroines of every age, ability, and background. Published by the World Open Water Swimming Association, the Open Water Swimming Magazine is a free benefit to WOWSA members.

WOWSA Member Benefits include 12 issues of the Open Water Swimming Magazine, the annual 276-page Open Water Swimming Almanac, a free listing in Sponsor My Swim, outstanding product discounts from FINIS, an entry in Openwaterpedia and more...
LEARN MORE

The Other Shore


The Other Shore follows world record holder and legendary swimmer Diana Nyad as she comes out of a thirty-year retirement to re-attempt an elusive dream: swimming 103 miles non-stop from Cuba to Florida without the use of a shark cage. Her past and present collide in her obsession with a feat that nobody has ever accomplished. At the edge of The Devil’s Triangle, tropical storms, sharks, venomous jellyfish, and one of the strongest ocean currents in the world, all prove to be life-threatening realities. Timothy Wheeler’s documentary brings Diana Nyad’s extraordinary adventure to life as Diana sets out to prove that will and determination are all you need to make the unimaginable possible.
LEARN MORE...

2014 Open Water Swimming Almanac



An Almanac for Open Water Swimming

An almanac is essentially a body of knowledge which is so complete that it enables people in different fields to make predictions about the future of their respective industries.

This, for example, was the purpose of the traditional farmers almanacs. It enabled farmers to determine as accurately as possible which crops to plant for the greatest harvests in a given year.

But the farmers almanac was just one example among many.
There are, of course, many different kinds of almanacs.

In fact, there is even one for open water swimming...

Preview the Open Water Swimming Almanac:
https://www.worldopenwaterswimmingassociation.com/preview-open-water-swimming-almanac


The trends are very clear.
The tide is rising for open water swimming.

SponsorMySwim.com

Open Water Swimming Event Sanctioning

World Professional Marathon Swimming Federation

Open Water Race Calendar

Coaches Education Program