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 » New Rounding Rules

Page: Previous 1 2

Posted by
AGage


Users avatar

Posts
411
Registered at
2008-12-27 10:31:57
2010-03-23 14:08:28 - Re: New Rounding Rules
Can the implementation, or atleast detail, of the new rounding 'rules' be explained?
I am in the Grey WHale Migration race, couldnt login for a few days and had my boat on a TWA course. Rounded 1st WP fine, but passd the 2nd to the west, so i have gone back south to round it properly, but it does not say 'Rounded' but still 'Pass NE'.

I have attatched screenshot to illustrate.

WHat should I have done here? Or is this an issue of implementation and WPs with very little course change (as with this WP)? I know how I (as a programmer) would have implemented the rule enforcement, so perhaps it is and needs some fine tuning as to Vector angles? ALthough you may have a completely different solution for enforcing proper mark rounding...
I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Attachments
Posted by
Schakel


Users avatar

Posts
183
Registered at
2008-12-19 09:19:00
2010-03-23 14:24:56 - Re: New Rounding Rules
You have to back track and pass the waypoint on the same side again before you can round it on the correct side. In this case, you'd have to pass it to the south west again before passing it to the north east to get it marked as rounded.

HTH,
Philip
Posted by
A2


Users avatar

Posts
347
Registered at
2009-10-26 00:39:42
2010-03-23 14:58:37 - Re: New Rounding Rules
It may be helpful to illustrate the new rules for rounding way points in SOL by saying that marks are rounded in either a Clockwise or Counter-clockwise (anti-clockwise for the Brits) fashion.

You are no longer able to simply play "Tag & Go" with the decision point. Proper approach and exit must be adhered to.

I have been told that Sailors don't think in these terms but rather have their own linguistic style for referring to the same actions such as "leave to port / starboard."

Whichever works for you
is fine with me.

As a side note:

If you happen to jump across the tip of land that the mark is placed on and in so doing have passed it the wrong way round, you will have to retrace not only your steps but also that jump as well to get back to the place where you deviated from the allowed path before completing this "Hypothetical" way point.

8^)

--- Last Edited by Aethereal at 2010-03-23 15:03:12 ---
None so blind
Posted by
Incognito


Users avatar

Posts
183
Registered at
2008-12-06 13:43:52
2010-03-23 15:03:17 - Re: New Rounding Rules
A picture if often worth a thousand words.
;)
Attachments
Posted by
76Trombones


Users avatar

Posts
362
Registered at
2009-08-03 18:04:56
2010-03-23 15:59:53 - Re: New Rounding Rules
Examples of valid and invalid roundings for a marks-to-port/anti-clockwise case. (ignore the finish line stuff)



edit: hmmm... forum format doesn't much like largish embedded images :)

edit: still too big...

--- Last Edited by 76Trombones at 2010-03-23 16:08:43 ---
Attachments
Posted by
AGage


Users avatar

Posts
411
Registered at
2008-12-27 10:31:57
2010-03-23 16:50:22 - Re: New Rounding Rules
Thanks, after reading that I am rather ashamed I didnt realize that before...
I should have... been racing boats long enough LOL

Edit Looks fine 76T, although 'G' looks a little odd...

--- Last Edited by Aaron Gage at 2010-03-23 16:52:33 ---
I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Posted by
sol


Users avatar

Posts
296
Registered at
2008-08-14 11:08:14
2010-03-24 18:07:49 - Re: New Rounding Rules
Remember that Q about the 180 case? sol is at the top mark in Rio and it looks like the server and client may have a disagreement. I guess it was 50-50? :)

I'm taking her back for a try going against the arrows.

76T

edit: clockwise rounding (against the arrow) works fine.

jakob said @ 2010-03-19 14:10:26:
The system should work with the 180 deg turns. The server then chooses a direction. To be frank we need some final testing of that to see that the client and the server agrees on the rounding direction. :-) Thanks for caring, testing and reporting!!



--- Last Edited by file complaints here at 2010-03-24 19:10:44 ---
Posted by
A2


Users avatar

Posts
347
Registered at
2009-10-26 00:39:42
2010-03-24 20:57:58 - Re: New Rounding Rules
I had give some thought as to the logic of how to establish a correct rounding of a given mark.

I do not have any coding skills & I do not know what method is currently employed.

However please consider the following arrangement:

For every waypoint that has a directional vector which must be rounded create a secondary back azimuth vector 180 degrees in the opposite direction which if crossed first, would disable the forward gate until the anti gate was crossed again in the opposite direction. Thus every mark would actually be bidirectional in scope.

This would insure proper confirmation when a way point was rounded as required.

P.S.

Put a count function on the anti gate so that should a boat do a 360 in the wrong direction and pass the anti gate for a 2nd time merely re-crossing it once would not enable the forward gate until the wrong way count equals zero.

--- Last Edited by Aethereal at 2010-03-24 21:05:04 ---
None so blind

Page: Previous 1 2

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Kamchatsky to Tromsoe 2024

Just before the light failed entirely in Antarctica, Skip Novak managed to get his Pelagic 77 out of the ice and north up the Pacific to Kamchatsky. The sun is shining (24/7) and not a penguin to be seen, and Skip believes the Norh East Passage is ice-free (sufficiently) to attempt it, so all aboard for a c 4250nm voyage from east to west across the top of Siberia, Russia and Norway to Tromsoe!
Race #1779
INFOby brainaid.de
Pelagic 77 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: HLAT - SYC
Race starts: Jul 18th 19:00 Registration Open!
▶ Flash
GO TO RACE

Cowes to St Malo TIMED Race 2024

Organized by the Royal Ocean Racing Club since 1929, the Cowes to St Malo Race is a true RORC Classic. Starting from the Royal Yacht Squadron Line, Cowes, IOW, a magnificent spectacle can be watched from The Parade, Cowes. The Cowes to St Malo Race is part of the RORC Season’s Points Championship, the world’s largest offshore racing series. Dating back to 1906, the Cowes to St Malo Race precedes all of the world’s famous races including the Fastnet Race. This is a TIMEDrace, so you may RE-REGISTER HERE to try again, after finishing a run. You will have 13 days and 11 hours to show your skill and decision making after the race opens.
Race #1828
INFOby brainaid.de
TP-52 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ3 - TRCH - SUPSOL - SYC
RACE CLOSE: Saturday,
27 July at 23:00 UTC
Race starts: Jul 14th 12:00 Registration Open!

▶ Flash
GO TO RACE

Lake Ontario 300 Challenge 2024

Lake Ontario Offshore Racing (LOOR) welcomes Sailonline to a second race of their annual series, this time as hosts of the virtual LO300. As the name implies, the LO300 is a 300nm offshore race across the length and breadth of Lake Ontario, from and back to Port Credit YC. Once again, as is our wont on Lake Ontario, a fleet of Beneteau First 36.7s is being made available to virtual racers. There is an overall prize for the SOLer who best bosses Lake Ontario over the two races hosted on SOL, this 300 and the Susan Hood raced back in May; so let the competition be fierce!
Race #1805
INFOby brainaid.de
First 36.7 PARTICULARS
NAM_AWIP WX Updates:
0245 / 0845 / 1445 / 2045
Ranking: LOOR - SYC
Race starts: Jul 13th 15:10 Registration Open!

▶ Flash
GO TO RACE

SSANZ Triple Series 2024 - Race 1


Welcome once again to our online buddied Short-handed Sailing Association of New Zealand brilliant long-standing SSANZ Triple Series for two-handed yachts on the waters of the Hauraki Gulf, sponsored this year by Lewmar Marine. Commencing with a c 46nm quick dash out to Motuora Island via The Haystack and home, we will as always compete in virtual Young88s, against the real-life fleet of the members of the ever-Young 88 Association!!
Race #1823
INFO by brainaid.de
Young 88 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SSANZ - SYC
Race starts: Jul 12th 21:15 Registration Closed
▶ Flash
GO TO RACE

Tall Ships Races 2024 - Tallinn to Turku


Welcome to the second of three virtual Tall Ships Races on the Baltic Sea which are concurrently being organized in-real-life Sail Training International . This second race is from Tallinn, Estonia to Turku, Finland; circa 150nm in Sailonline’s stately Full Rigger.
NOTE: Starts and Finishes in tall ships racing are always offshore to avoid conflict with shipping and shipping lanes.
Race #1812
INFO by brainaid.de
Full Rigger PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: TS - SYC
RACE CLOSE: Friday,
July 19 at 2300 UTC.
Race starts: Jul 11th 14:00 Registration Closed
▶ Flash
GO TO RACE

Southampton to Punta del Este 2024

Sailonline is delighted to offer our sailors a 'reversed' Atlantic ocean race. As the RTW championship Atlantic part takes a detour to the Bahamas, we will offer you a reversed course as we will not do the 'usual' leg this year either. It is the July edition of this year's Ocean Championship. Our boat is the OD_65v3.
PRIZE: SMPF
Race# 1820
INFO from brainaid.de
OD65 PARTICULARS
WX updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ3 - OCCH - SUPSOL - SYC
Race starts: Jul 01st 11:00 Registration Closed
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member WRmirekd
  2. Sailonline Yacht Club Member FreyjaUSA
  3. Sailonline Yacht Club Member CriticalHippo
  4. Sailonline Yacht Club Member Vida_Maldita
  5. Sailonline Yacht Club Member rafa
  6. Sailonline Yacht Club Member TarassBoulba
  7. Sailonline Yacht Club Member Flamingo
  8. Sailonline Yacht Club Member CollegeFund
  9. Sailonline Yacht Club Member Sax747
  10. Sailonline Yacht Club Member bonknhoot

View full list

Series

Mobile Client

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

The mobile client