Wind Or Current For Bermuda Race Route?
[Written by Talbot Wilson] Tacticians, navigators and skippers in the Newport Bermuda have choices to make in deciding the fastest route to Bermuda. The straight — rhumb line— course is the shortest distance between two points, but it may not be the fastest. Two choices could determine victory or defeat.
Will the wind on the course or Gulf Stream current be more important? That choice must be made before the race starts. The 164-boat fleet sets off Friday, June 20 from Newport Rhode Island.
Grandstand view from Castle Hill
For more than forty years Frank Bohlen has studied ocean and near-shore currents. Since 2002 he has prepared detailed analyses of the ocean between Newport and Bermuda in the months prior to this race. In his recent online tutorials on the race website, he has described Gulf Stream development using images from NOAA and other sources. Click here to view them
How will the Gulf Stream current flow?
Ocean Currents from altimeter data June 18, 2014
Dr. Bohlen commented on the Gulf Stream choices this week. “The Gulf Stream in the vicinity of the straight line Newport to Bermuda route [the rhumb line] has been dominated by a deep meander. The meander has remained nearly stationary and deepened causing the direction of the flows in the main body of the Stream to rotate clockwise to a nearly northwest to southeast flow essentially paralleling the rhumb line for a distance of about 180 nautical miles.“
“The few shots of surface sea water temperatures that have been obtained recently suggest that the meander is the process of “pinching off” favoring formation of a cold core ring south of the main body of the Stream, increasing the development of the warm core feature north of the Stream near the edge of the continental shelf and redirecting the main body Gulf Stream flows to a southwest-northeast course crossing the rhumb line approximately 240 nm from Newport.”
“If this remains unchanged, the Gulf Stream will have little direct influence on optimum course selection. At the moment the warm feature north of the Stream favors a near rhumb line course from Newport to south of 39o N with a slight bias to the west to accommodate some amount of easterly set through the main body of the Stream. The Stream near the rhumb line is approximately 60nm in width with flows proceeding south to north east of the rhumb line.”
“To the south, the westerly edge of the cold core ring presently centered to the east of the rhumb line is in close contact with the rhumb line. This favors a direct course to Bermuda. The ring is expected to drift slowly [2-3 nm/day] to the west so that some additional course alteration to the west may be necessary to take full advantage of the ring currents.”
Bohlen concluded, “The combination of these Gulf Stream current features favor a course west of the rhumb line, with exact details dependent of boat characteristics and wind speeds and directions.”
Which way will the wind blow?
When considering how long-term wind shifts, happening over three or four days, will determine their course to an island 635nm away, a racer’s mantra is ‘sail fast to the new wind’. Ken Campbell of Commander’s Weather shared his insights on wind with the Bermuda Race Organizing Committee as of Tuesday morning, four days before the start.
“For 2014 there are similarities to the 2002 race.” Campbell wrote. That year, a strong Gulf Stream meander ran into the face of a similar strong wind, creating very rough seas.
“Strong southwest winds are expected late Sunday night and Monday which will cause very rough conditions on the Gulf Stream. This should primarily affect the smaller yachts. The larger yachts will probably be in the strong SW winds, 20-30+ kts, for a shorter period of time and should be generally out of or getting out the Gulf Stream by then. It will be a very active weather pattern for late June”
“For the start day, sunshine and light north winds Friday morning will glass off [decline] in late morning and then fill in with a lightsouth-southwest sea breeze during the afternoon.”
There are two low pressure systems coming, Campbell noted. Looking at the lows from Tuesday morning, he predicts the first should reach the coast Saturday morning and then move out to sea and pass south of much of the fleet. Winds should become east to northeast. The strongest winds should be late Saturday and Saturday evening, when 15-30kt wind is possible for the larger yachts in the fleet. The very northern tip of the Gulf Stream will be rough, but the southeast meander will be perpendicular to the wind, so not that rough.
Sunday should be the transition day from the northeast to east winds to strong southwest winds. The second low pressure should move off the New Jersey coast Monday morning. Strong southwest winds should spread from west to east and southwest to northeast across the fleet. Southwest winds 20-30+ kts on Monday could impact the smaller half of the fleet the most. If they are still in the Gulf Stream,it will be a rough ride for the smaller yachts.
“Southwest winds should back and diminish for the approach into Bermuda for the smaller yachts on Tuesday and Wednesday,” Campbell concluded.
Skippers make their choices
With a current that favors west of the rhumb line and weather coming from the west, tacticians, navigators and skippers look at their choices. The race to Bermuda is in four parts— Newport to the Gulf Stream, the path through the stream, the exit from the stream to about 50-70nm from Bermuda and the final approach through the often fickle ’happy valley’ to the Bermuda finish.
This discussion was based on the current and wind observations and a forecast on Tuesday. All could change by the time the racers make their final commitment. Which way will winners go?
Follow them starting Friday afternoon on Pantaenius Race Tracking to see if your choice is a winner or not.
Twenty-nine of the two Newport Bermuda Lighthouse Divisions’ entries are also sailing the 25th Onion Patch Series, a tough triathlon of offshore racing. These Onion Patch racers have just sailed the NYYC 160th Annual Regatta presented by Rolex in Newport and will form the core of the June 27nd RBYC Anniversary Regatta which now has 32 entries. The RBYC Anniversary Regatta is open to all IRC or ORR rated yachts over 25 feet in Bermuda. Anniversary Regatta entries close at noon on June 25th. Information is online at onionpatchseries.com and at rbyc.bm.
As an avid yachtsman and Commodore of a prestigious yacht club, I am acutely aware of the nuances and serious tactical decisions that one has to make to win a race such as this. The average chap might not appreciate the skill, leadership and knowledge that must come into play to be a successful yachtsman. Without hesitation I tip my Captains hat to the skippers participating in this great nautical adventure and will be on hand to welcome all yachtsmen and yachtswomen on their arrival in our great island!
Yes Commodore JB. This is why you are unanimously voted commodore of our prestigious BBIRYC year after year. This is a great race and a great time of year in Bermuda and for our club. As Vice Commodore, I will do all I can to assist you in the representation of our club. We should sponsor an extreme yachting event in ocean going kayaks in the not too distant future.
A Commodore wears a Captains hat,what next ?
The title and rank of Commodore is reserved for that of the rank of Navy officers ONLY and not a Rinky Dink boat clubs.
Don’t get above your self.
How many sheets to the wind were you two chaps when y’all composed that prestigious aristocratic load of rubbish.
Go climb Mount Silly and take Jerk Buttocks with you.
You serve mockery on those who died at sea during WW11.
The greatest sailor at sea was actually lord Nelson Admiral of the British Navy, not only could he sail a ship but take it in to battle with a bunch of chaps and quickly dispatch Napoleon .
The French will never get over that one. Ha !
Admiral Froglegsbottom RET
Mr. J. Y. Dog, you should check the definition of Commodore as it refers to a rank in the Navy AND is a designation for the president of a yacht club. It would appear that your knowledge of the definition of simple words is as shallow as your nautical skills.
@niner
There is no such title in the “British Navy” as Vice Commodore as the word ” Vice ” is used in connection with that of the Presidential office, as in “Vice President”. you can not call the guy – Rear president-, could you ?
With respect to the British Navy The next lower rank in line to the Commodore is that of the ” Rear Commodore” the rank of ” Rear Admiral” takes the same president, if the Admiral is mortally wounded on deck the Rear Admiral get to light the gun powder.
As a matter of fact the US Navy Refers to their senior officers below the rank of Admiral of the Navy: Admiral of the fleet: and so on to we get to the rank of Commodore: ……..Captain and so on.
There is no position listed in the US Navy as (Vice Commodore)
Below the rank of Commodore, you could of course fill the shoes as ” Fleet Captain” where you would get the opportunity to serve the Commodore with the occasional Dark and stormy.
While i am on about it the British Navy will not enlist you if you don’t know how to curse.
“You are manning the guns aimed at an incoming enemy Torpedo plane , you take a bullet in you arm, you are expected to let fly a few choice words and keep on firing.” it is those who we refer to as “HERO”
A title given to those which far exceeds that of Admiral.
When you introduce the word” Club “into the equation then we are talking of a social gathering of booze cruisers with fancy names.
It is not for you to know of my experience of the sea.
@JYD,
You may be mistaken regarding ranks etc in yacht clubs. An exerpt from wikipedia states :
Yacht clubs are organized like any other club or organisation with committees, chairman, directors, etc. Due to the connection with the sea and hence the navy, the various posts use naval terminology. For example the chairman/CEO is the Commodore. Usually, under the Commodore there are also the Vice Commodore (in charge of land-based activities) and the Rear Commodore (in charge of water-based activities); for clubs in the United States they might in turn be assisted by the Port Captain and the Fleet Captain respectively. In a few clubs in the United Kingdom the Admiral, which is one rank above the Commodore, is the senior officer. Each of these ranks has specific responsibilities to ensure the smooth running of the club. Additionally, yacht clubs often have dress codes and many mandate a coat and tie while inside.
I think any organization that promotes yachting is worthwhile! best of luck to all participants in the race and to the members of BBIRYC!
JYD it seems that you have no respect for such prestigious sailors of this Yachting establishment. Only a shoeby such as your self could make such a ridiculous statement without regards to Rank or the knowledge of such a decorated position. If you are a yachtsman in any case, shape or form; you should hand in your flip flops and board shorts ASAP… You are disgrace to Seamen/Yachtsmen!
Good luck all. My Lamborghini Tucson is available for hire if quality land transport is needed.