Facebook

Login

Support Sailonline

If you haven't already - join the SAILONLINE YACHT CLUB!

Please also consider making a donation - all amounts are greatly appreciated!

Board » Technical Support » Going in the reverse direction?

Posted by
Ketch


Users avatar

Posts
10
Registered at
2009-10-10 16:57:03
2010-05-01 06:54:41 - Going in the reverse direction?
In the Figaro Transit currently running - I noticed my place had dropped overnight quite dramtically (should have set a CC I thought and OK another major blunder in my course setting - so whats new!). Then I realised I was going backwards at a speed of about .5 knots in exactly the opp direction to the one I had set.

How do I know I didn't set an incorrect course - well its still showing in my course to steer box!

So is this a bug in the system - how is it possible that I am moving in the other direction to the one indicated?

Best wishes

Robert
Posted by
Incognito


Users avatar

Posts
183
Registered at
2008-12-06 13:43:52
2010-05-01 07:04:36 - Re: Going in the reverse direction?
Mmmm strange. Could you take a screen shot? Looking at your track, it does not look really abnormal.

Francois
Posted by
Ketch


Users avatar

Posts
10
Registered at
2009-10-10 16:57:03
2010-05-01 14:33:49 - Re: Going in the reverse direction?
Hi Incognito

Thanks for getting back - if you track back 46.2 nm's on my current track you will see a weird kink in my course tracker (you do need to zoom in)- this was for a period of I recon three to four hours taking me almost straight head to wind.

No instruction was issued for this indeed quite the oposite.

Best wishes

Robert
Posted by
Mulligan2


Users avatar

Posts
21
Registered at
2009-03-31 04:53:50
2010-05-01 16:06:36 - Re: Going in the reverse direction?
i have seen instances of multiple DC's set to fire at the some time that cause TWA=0 responses...

I can replicate (on occasion and always while racing in a top20) interactively,
"They won't play if they can't win" - Walt Disney
Posted by
kalle


Users avatar

Posts
413
Registered at
2007-06-01 09:58:04
2010-05-01 16:11:07 - Re: Going in the reverse direction?
In some polars you can go reverse if using a twa *almost* equal to zero, this is because of the spline interpolation.

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Red Eye - Myth of Malham 2025

In 1947, Hugh McLean & Sons of Gourock, Scotland built a radical racing yacht for John Illingworth, soon-to-be Commodore of the RORC, to a design by Laurent Giles. With a masthead rig, giving her ‘free’ sail area per the rules of the time, and short overhangs reducing pitching, Myth of Malham went on to win The Fastnet that year and again in 1949, and to compete in numerous Admiral's Cups. In 1958, in honour of the yacht, the Myth of Malham race was conceived - a mini-Fastnet to the first lighthouse on a rock west of Cowes, Eddystone, rather than the second, to be held in non-Fastnet years. IRL this year it has been raced already, but this stops us not from “Red Eye” racing its online 230nm in Fareast 31Rs, leaving how to deal with the Isle of Wight open to your own discretion.
Race #1847
INFOby brainaid.de
Fareast 31R PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - RED
Race starts: Aug 25th 12:00 Registration Open!
▶ Flash
GO TO RACE

Africa by Sea 2025 - Maputo to Mogadishu


The fifth leg of our exploration of Africa By Sea takes us north along the length of the Continent’s succulent sub-tropical and tropical Indian Ocean coast. Much fought over by traders and colonists both well-before and after a Portuguese expedition under the command of Vasco da Gama first sailed there from Europe back in the 16th century, it is yet to be properly explored as a yachting destination. With plenty of islands off- and inshore, small and very large, there is much to interrupt your 1900nm voyage and visit in your Swan 65, from Maputo to Mogadishu! Race #1858
INFOby brainaid.de
Swan 65 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - ABS
Race starts: Aug 20th 17:00 Registration Open!
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member vida
  2. Sailonline Yacht Club Member WRmirekd
  3. Sailonline Yacht Club Member CriticalHippo
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member KaSToR
  6. Sailonline Yacht Club Member Kipper1258
  7. Sailonline Yacht Club Member Sax747
  8. Sailonline Yacht Club Member BRENTGRAY
  9. Sailonline Yacht Club Member FreyjaUSA
  10. Sailonline Yacht Club Member CollegeFund

View full list

Series

Mobile Client

SYC members have the benefit of access to our mobile/lightweight web client!

The mobile client