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 » General Discussion » Mark rounding

Page: Previous 1 2 3 4 5 6 Next

Posted by
NZL_PaulR


Users avatar

Posts
311
Registered at
2008-07-22 12:21:30
2011-07-18 21:44:52 - Re: Mark rounding
7mr: Sorry about that false praising.
It was Andrew Lees who raised the tidal comments in another thread.

I think one could review previous postings whilst creating a new post, so I could not check as I was writing. Being male, multi-tasking is knot possible.
(English needs more "k"s as they are under used LOL)
Cheers
If it breaks, it's not strong enough!
Posted by
AGage


Users avatar

Posts
411
Registered at
2008-12-27 10:31:57
2011-07-23 11:33:40 - Re: Mark rounding
Yes, you can Paul... 'Duplicate Tab' - I often have the thread open and a reply page to type into..

There has been sever code written to enforce this, as for awhile it was enforced. How or why it is no longer in there is a mystery, but Im sure will be fixed soon.

Not to mention this came up earlier in the Tampa race, pretty much with same feelings expressed.

Of course using a carbon tiller is not unsportsmanlike if within class rules, but show me please where it explicitly states you are able to unwind a mark rounding ??

I think the fact that following boats, except (IIRC) #24 or something, still went the correct way - despite seeing PetrM retain his #1 after unwinding, says more than anything written in this or other similar threads...
I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Posted by
captjack1942


Users avatar

Posts
239
Registered at
2008-01-18 03:24:03
2011-07-23 18:33:47 - Re: Mark rounding
The big stink about mark rounding started in the Round Texada Island race Nov. 17, 2009. There was an offshore mark at the north end of Texada island. The next mark was well south of the southern end of the island. A number of people, myself included, Rounded the mark and then went back to the main channel on the west of the island. There was better wind and an easier course to follow while finishing a night's sleep. There was much hue and cry following this because many people thought we should have left the entire Texada Isalnd to starboard.

This lead to the start on Nov. 21, 2009 of the Almost Round Texada Island Race. "Almost" so that people would know it was not necessary to go to the east channel. It also lead to the placing of the north Texada mark on shore and placing another mark at the southern end of the island at the end of the east channel in the Round Texada Island 2010 race, Nov. 6, 2010.

In the San Juan Islands race in March 2010. It seems the question came up again: here
I did not participate in the San Juan race as I was tied up in getting my boat ready to bring down the coast to Santa Cruz. So I missed a lot of the conversion and the resulting changes to the code in the server.

In the Round Britain and Ireland race, July 31, 2010, I was rounding Muckle Flugga, received a rounded mark indication, and then turned back to go to the west of the islands for more wind and a better angle. I came back some time later and found my boat had been "unrounded" and I was losing many places. See the posts here:

Now in the recent Tall Ships leg 2, a number of ships (most notably the leader) did exactly the same thing and it was allowed by the server.

Whatever the outcome of the whole thing is, the most important thing is to create some consistency to the rule.

Maybe instead of complex code math that says if a certain line or lines from the mark are crossed the mark is rounded, but if a line or lines are recrossed the the mark is unrounded we need something a bit simpler. Say what if the intent of the course is that Unst be left to starboard, then why not have the mark on the south end of Unst, thereby forcing a course that leaves Unst to starboard.

---------------
edited to make links fit column width

--- Last Edited by RainbowChaser at 2011-07-24 11:25:23 ---
Posted by
NZL_PaulR


Users avatar

Posts
311
Registered at
2008-07-22 12:21:30
2011-07-23 22:15:18 - Re: Mark rounding
Yes placing a few more marks on the course, even if you do NOT have to go closely by them, will SIMPLY solve a lot of programming issues.

I like U/C's simple approach

Mark 1, then round mark 1A; 2, then 2A as in olympic or windward-leeward americas cup courses.
If it breaks, it's not strong enough!
Posted by
RainbowChaser


Users avatar

Posts
2656
Registered at
2009-06-14 09:44:50
2011-07-24 11:35:29 - Re: Mark rounding
It is important, however, to get a balance between enough marks to make sure the racing line is followed, but not so many that a race simply becomes a "follow-the-leader" from early on.

As soon as a race appears on the Homepage the sol boat is registered so everyone can log in as sol (Username: sol / Password:sol) and have a look at the course.

At this stage please would folks make a point of checking the course over to ensure that no "fouls" can occur? Adding waypoints, moving waypoints (including the start and finish) is possible now without causing annoyance or confusion to anyone.

SO.. when you see a race on the Homepage and on reviewing it you spot a problem, just shout out in the chat of an open race OR post a note in the Races or Race Proposals Forums OR email me. All routes lead to possible changes.

Together we should be able to eliminate possible "rogue" waypoints!! :-D

--- Last Edited by RainbowChaser at 2011-07-24 11:36:55 ---
Posted by
captjack1942


Users avatar

Posts
239
Registered at
2008-01-18 03:24:03
2011-07-26 20:46:47 - Re: Mark rounding
I guess long posts tend to lull people into a trance like state, or we tend to see only what we think we see. So the paragraph below somehow failed make the connection to comprehension.



captjack1942 said @ 2011-07-23 18:33:47:
Maybe instead of complex code math that says if a certain line or lines from the mark are crossed the mark is rounded, but if a line or lines are recrossed the the mark is unrounded we need something a bit simpler. Say what if the intent of the course is that Unst be left to starboard, then why not have the mark on the south end of Unst, thereby forcing a course that leaves Unst to starboard.


Maybe a couple of pictures?
Attachments
Posted by
ShamrockPirate


Users avatar

Posts
189
Registered at
2010-12-03 17:49:57
2011-07-27 02:29:16 - Re: Mark rounding
Jack,

An elegantly simple solution as I am always better with picture books!

This thread was just SCREAMING for a limerick.... and I oblige.

limericks

-------------
edited to change url to link

--- Last Edited by RainbowChaser at 2011-07-27 13:45:44 ---
Posted by
sol


Users avatar

Posts
298
Registered at
2008-08-14 11:08:14
2011-07-28 04:39:06 - Re: Mark rounding
captjack1942 said @ 2011-07-26 20:46:47:
I guess long posts tend to lull people into a trance like state, or we tend to see only what we think we see. So the paragraph below somehow failed make the connection to comprehension.



captjack1942 said @ 2011-07-23 18:33:47:
Maybe instead of complex code math that says if a certain line or lines from the mark are crossed the mark is rounded, but if a line or lines are recrossed the the mark is unrounded we need something a bit simpler. Say what if the intent of the course is that Unst be left to starboard, then why not have the mark on the south end of Unst, thereby forcing a course that leaves Unst to starboard.


Maybe a couple of pictures?

========================
I didn't fail to connect, just doesn't solve the problem...
So what is supposed to happen in the middle of an ocean? Marks cannot always be placed on land...
Compared to much in SOL, the math isn't complex - quite simple Geometry really...

---------------
WILL WHOEVER POSTED THIS PLEASE EDIT IT AND ADD YOUR NAME TO IT!

--- Last Edited by RainbowChaser at 2011-07-28 21:19:16 ---
Posted by
AGage


Users avatar

Posts
411
Registered at
2008-12-27 10:31:57
2011-07-30 07:13:01 - Re: Mark rounding
Sorry that was me - didn't notice I was logged in as sol...!
I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Posted by
captjack1942


Users avatar

Posts
239
Registered at
2008-01-18 03:24:03
2011-07-30 15:06:06 - Re: Mark rounding
There is no problem in the open sea. The hassle only arises when there is an island to be rounded. Or at least the intent of the race is to leave the island to port or starboard. The question never comes up in the open ocean nor when the mark is placed on large land mass.

Page: Previous 1 2 3 4 5 6 Next

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Valletta Sprint 2025


We invite you once again to this SOL classic around the Middle Sea, departing from and returning to historic Valletta. Loseley modelled on an IRL classic often sponsored by a luxury wristwatch purveyor, our c 600nm course takes us north as far as Stromboli, then west of Sicily and south to Lampedusa and back to Valletta probably via the strait between Malta and Gozo. This year we will race it all in very Meddy Dufour 40’s!
Race #1949
INFO by brainaid.de
Dufour 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Dec 20th 11:00 Registration will open soon
▶ Flash
GO TO RACE

Aeolian Cruise 2025


This is the final race of the ARCH 2025 series and your last chance to improve your ranking. It promises to be an exciting 210nm slalom through the beautiful landscapes of the Aeolian Islands. Our Moody S38's will take off from Tropea and sail west between successive islands to reach the finish line in the Gulf of Palermo.
Fair Winds.
Race #1991
INFO from brainaid.de
Moody S38 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ4 - ARCH - SUPSOL - SYC
Race starts: Dec 15th 17:00 Registration Open!
▶ Flash
GO TO RACE

Chatham Island TIMED Chase 2025

The final TIMED race of 2025 takes us to the isolated and mysterious Chatham Islands archipelago 430 nm east of New Zealand’s South Island. There promises to be plenty of breeze from every point on the compass as we sail the Farr 38 around Chatham Island, Pitt Island, and The Forty Fours on this 124 nm course. This is a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have 13 days and 11 hours to test your skill and decision making after the race opens.
Race #1990
INFOby brainaid.de
Farr 38 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ4 - TRCH - SUPSOL - SYC
RACE CLOSE: Saturday,
27 December at 23:00 UTC
Race starts: Dec 14th 12:00 Registration Open!
▶ Flash
GO TO RACE

Christmas to Christmas Island 2025

Two waypoints, start and finish, and between them 5827 NM of two oceans. Not much time if we want to sit at the Christmas Eve table. You will need to maintain an average speed of over 10 knots, maybe quite possible with this Maxi Trimaran, but prepare your vessel well and choose the best of the many possible routes. Hands up everyone who knew there were TWO Christmas Islands?! OK, maybe you have sailed this Sailonline course before... but it's time to get ready for the 2025 challenge of racing between Christmas Island in the Pacific to Christmas Island in the Indian Ocean! It also marks the conclusion of our prestigious Ocean Race Championship 2025. Please have fun! Fair winds!
PRIZE: SMPF
Race #1967
INFO by brainaid.de
Maxi Trimaran PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ4 - OCCH - SUPSOL - SYC
RACE CLOSE: Wednesday,
December 24 at 2300 UTC.
Race starts: Dec 01st 11:00 Registration Closed
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member KaSToR
  2. Sailonline Yacht Club Member CriticalHippo
  3. Sailonline Yacht Club Member WRmirekd
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member vida
  6. Sailonline Yacht Club Member CollegeFund
  7. Sailonline Yacht Club Member bonknhoot
  8. Sailonline Yacht Club Member BRENTGRAY
  9. Sailonline Yacht Club Member Panpyc
  10. Sailonline Yacht Club Member sassy63

View full list

Series

Mobile Client

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

The mobile client