Weather-Wise

Atlantic weather links

Roger Badham of team 
Club Med 
 talks about weather
routing

Re-live Club Med's record  Atlantic crossing

Re-live the agony and ecstasy of the solo trans-Atlantic race

Sail downwind in the Southern Ocean aboard a Volvo 60

 

False start for Club Med

Light wind and low speed make for a very dull crossing

July 31, 2000

Late last week Club Med sacrificed a duel with Playstation to maintain its busy summer training regime.

With four trans-Atlantic crossings scheduled before The Race, skipper Grant Dalton and crew slipped out of New York Harbour in eight knots of wind and a dim prospect of breaking the coveted New York to Lizard crossing in under record time.


You can almost feel the humidity as Club Med skipper Grant Dalton talks on his mobile phone off Ambrose Light - the official starting line for the New York to Lizard Atlantic crossing.

This is typical weather for this time of year off New England. A low pressure cell in the Ohio Valley and a high over Bermuda combine to drive warm moist air to the north-east. Off New York, where the water is warm, haze is the result. Further 'down east' off Maine and Nova Scotia, there is thick fog as warm and humid air travels over the cold waters of the Labrador Current.

Image © Club Med.


Serious slow mode

But the attempt was short lived. Less than 48 hours out of port, with top speed never above five knots, the world's fastest maxi-Catamaran turned around and headed back for another go.

The false start illustrates one downside of cats, as opposed to trimarans or monohulls: In extremely light conditions, the extra wetted surface of that large second hull causes enough drag to keep the boat in slow mode. Give the big boat enough breeze to lift a hull - perhaps 15 to 18 knots -  and watch it fly.

Playstation, meanwhile, plans to stand at the ready until conditions improve and a crack at the record again presents itself. Now that Club Med has returned to New York, another opportunity for a duel may present itself.


Synoptic situation in the North Atlantic on July 31 at 00gmt. Lots of lazy isobars indicate little wind over a lot of ocean. The only bright spot for sailors aboard Club Med and Playstation is the moderately strong low pressure cell east of Sable Island and Nova Scotia.

image © Intellicast.


Where's the wind?

July is normally a good time to break the trans-Atlantic record, but this year has posed problems for weather routers.

Throughout early summer and until med July, a persistent trough line off the east coast of  the US was the main feature in the North Atlantic. While the trough kept winds light and changeable near the eastern seaboard, the sub-tropical high- the Azores High - to the south-east remained strong and large. In fact, it typically stretched right across the North Atlantic and would have provided enough puff for these latest-generation multihulls to crack the long-standing record.

Just lately, however, conditions have deteriorated with the high pressure cell losing strength and uniformity. The trough line has also lost definition. Weak and low pressure cells and frontal systems are intruding south into an area normally dominated by south-west trade winds. The result is loose and wobbly isobars marking large areas of light winds right across 'The Pond'.

Certainly the synoptic situation remains unstable and both Bob Rice and Roger Badham will be looking forward to fresh conditions before their respective teams head for England.

Promising low pressure cell

A developing low pressure cell east of Sable Island may provide some relief for these sailors, provided  this depression sweeps eastwards with enough strength to influence winds well to its west. Keep an eye on the weather and let's find out!


Facts and figures

  • Charlie Barr and the schooner Atlantic crossed the Atlantic in a little over 12 days, four hours, one minute and 19 seconds. Barr's time remained unbroken for 75 years. 
  • Frenchman Eric Tabarly was the first to top it, in 1980 on board his foil-borne trimaran, Paul Ricard, reducing the time to 10 days. 
  • The record today stands at 6 days, 13 hours, 3 minutes, and 32 seconds set in June, 1990, by French skipper Serge Madec and his 75-foot catamaran Jet Services V. On that occasion, Madec averaged 18.42 knots (34.5 kph) for the 2888-mile crossing.

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© weather-wise.com 2000

 

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