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
299
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:

Tobruk to Iskenderun 2026

Welcome to the fourth of our nine races across the length and breadth of the Magical Mediterranean Sea, and the second that is not in partnership with a real-life event, this time for good reason, which we won’t get into here. From Tobruk to Iskenderun it’s 670nm in length, with the added complication that the island of Cyprus will be in your way. Hoping, possibly forlornly, for plenty of downwind sailing, we’ll take the Lagoon 55 for the voyage!
Race #1976
INFO by brainaid.de
Lagoon 55 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: MED - SYC
Race starts: May 05th 15:00 Registration Open!

▶ Flash
GO TO RACE

Tasmania to Kamchatka 2026

Welcome to yet another all-new route. Tasmania to Kamchatka, part of our Ocean Championship and also the third leg of the ROW (Round the Old World) series. Be aware of the obstacles on the way, likely to split the fleet. It's like X:mas to X:mas, crossing the same waters, navigating the same archipelagos. This second race of OCQ2 2026 will be sailed in our revised 'version 2' Imoca 60 Foil. Race #2031
INFO by brainaid.de
Imoca 60 Foil v2 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - ROW - OCCH - SYC
Race starts: May 04th 11:00 Registration Open!
▶ Flash
GO TO RACE

Bay to Bay 2026 - Leg 2

After a thrilling opener, the 2026 edition of the Bay to Bay Yacht Race continues with Leg 2, bringing even more adrenaline and tactical excitement to the waters of the Great Sandy Marine Park. Our SOLers will once again take the helm of their ILCA 7, this time tackling a 24-nautical-mile course through shifting breezes and tight competition.
With fresh legs, sharper tactics, and everything to race for, it’s anyone’s game! See you on the start line for the grand finale!
Race #2024
INFO from brainaid.de
ILCA 7 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
RED - B2B - SUPBUD - SYC
RACE CLOSE: Wednesday,
May 6 at 2300 UTC.
Race starts: May 02nd 21:30 Registration Open!
▶ Flash
GO TO RACE

Bay to Bay 2026 - Leg 1

Prepare for an electrifying start to the 2026 Bay to Bay Yacht Race! This first leg will see our SOLers take on a fast-paced, 16-nautical-mile sprint through the stunning waters of the Great Sandy Marine Park, weaving past the breathtaking landscapes of the Great Sandy National Park. Racing in ILCA 7, the fleet will battle shifting winds, tricky tactics, and fierce competition—all in pursuit of victory! With the thrill of the race and an unforgettable sailing experience ahead, we can’t wait to see you on the start line!
Race #2023
INFO from brainaid.de
ILCA 7 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
SPQ2-SPCH-B2B-SUPBUD-SYC
RACE CLOSE: Tuesday,
May 5 at 2300 UTC.
Race starts: May 02nd 02:00 Registration Open!
▶ Flash
GO TO RACE

Regata dell’Accademia Navale 2026

Welcome to Sailonline’s partnership with the City of Livorno (Leghorn say the English) in cooperation with the local yacht clubs and the Italian Navy, offering all the online opportunity to race the famous Regata dell’Accademia Navale - 630nm in length. Starting and finishing in Livorno, this year the race takes you the length and breadth of the Tyrrhenian Sea via little Mortorio (Mortoriotto) off Sardinia to Capri and home again to Livorno. This race also counts towards Sailonline’s Magical Mediterranean Series and the SuperBuddy title. Online, you will be sailing a Mini 6.50, to give you a match against several of the real-life entrants, which you will be able to track on-screen!
Race #2020
INFO by brainaid.de
Mini 6.50 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: MED - SUPBUD - SYC
RACE CLOSE: Thursday,
May 7 at 2300 UTC.
Race starts: Apr 25th 10:00 Registration Closed

▶ Flash
GO TO RACE

Rommel by Balloon 2026 - Through the Sahara


Generalfeldmarschall Johannes Erwin Eugen Rommel may have been that chivalrous, gallant tank commander of legend, led astray by the Prussian military traditions of loyalty and chain of command, but one thing he wasn’t, was mad. So, let’s do it anyway – not stick to the coast and the battle for logistical superiority – but depart the oases of Siwa south west into the desert for Agadez and its uranium. And let’s go by balloon, it’s only 2500km (1250nm)!
Race #1973
INFOby brainaid.de
SOL Balloon PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: BOL - SYC
RACE CLOSE: Sunday,
May 3 at 2300 UTC.
Race starts: Apr 07th 13:00 Registration Closed
▶ Flash
GO TO RACE

Falklands to Tasmania 2026

Welcome to yet another all-new route. This next race is part of our Ocean Championship as well as the ROW series. Falklands to Tasmania, is like last year's island to island. It’s one of the longer ones 6400nm, more than half way around the world (and the Antarctica). It starts the 2026 OCQ2, and will be sailed in our Steinlager 2, contrary to prior notice.
Race #2021
INFO by brainaid.de
Steinlager 2 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - ROW - OCCH - SYC
RACE CLOSE: Thursday,
May 7 at 2300 UTC.
Race starts: Apr 06th 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 CriticalHippo
  3. Sailonline Yacht Club Member rumskib
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member Panpyc
  6. Sailonline Yacht Club Member KaSToR
  7. Sailonline Yacht Club Member CollegeFund
  8. Sailonline Yacht Club Member bonknhoot
  9. Sailonline Yacht Club Member sassy63
  10. Sailonline Yacht Club Member vida

View full list

Series

Mobile Client

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

The mobile client