Sailonline.org - Online Sailing

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!

Tweets by @sailonline

Board » Flag Officers » Races » Leg 5 Volvo Ocean race

Page: 1 2 Next

Posted by AcmeRacing Posts 13 Registered at 2007-12-24 06:18:02	2012-03-17 06:41:40 - Leg 5 Volvo Ocean race
	I can't figure this out! I have 1907 miles to Cape Horn. NZL 2389 has 2101 miles to Cape Horn. The mileage shows that I am behind them by 1200 miles. It still shows that I have 5300 miles to go. Sorry I only have around 4000 miles to go. What is going on here? Please advise. This kind problems have happend before when crossing the dateline. Please check before the race starts in 18 hours.
Posted by AGage Posts 411 Registered at 2008-12-27 10:31:57	2012-03-17 09:10:26 - Re: Leg 5 Volvo Ocean race
	Does your DTG value shown in race message 'racing with ## nm to go.' differ from the one shown in the leaderboard ?? We are looking into this I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Posted by AcmeRacing Posts 13 Registered at 2007-12-24 06:18:02	2012-03-17 09:17:29 - Re: Leg 5 Volvo Ocean race
	Aaron, both are the same!
Posted by AGage Posts 411 Registered at 2008-12-27 10:31:57	2012-03-17 11:17:47 - Re: Leg 5 Volvo Ocean race
	This highlights some peculiarities in the way SOL computes your DTG. In the manual there is an image of rounding a mark, with a line extending from the mark (based on the rhumblines into and out-of the mark). The bearing from your boat to the mark along this line (when your rounding is scored) is also shown on the NOR for that mark. Now, to compute distance to finish line, the server computes the shortest distance between your boat and this line - computing the point on the line which is closest to your boat at the same time - and then also uses this point to calculate how for to the next waypoint after that. A point further away form the mark thus gets a 'double distance penalty'. It then just adds the rhumbline distance of any remaining legs in the race to get your final DTG value. So, the server is not computing the exact same thing for the 2 boats, because their point on the 'scoring line' is different, depending what the XTE is. In fact, if I measure this up now - the South Pole is the closest point on the 'scoring line' for many boats - hence the funky rankings (next leg dist is same for all, but current distance to SP can be less for boats that are more to the W) Bobbert pointed this out as I was writing the above... I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Posted by 76Trombones Posts 362 Registered at 2009-08-03 18:04:56	2012-03-17 14:12:00 - Re: Leg 5 Volvo Ocean race
	This is the way SOL roundings always work. They'll start to make a bit more sense as we get close to the cape, but will likely go haywire again after we round. They'll be more and more "correct" as we approach the turn into Itajai, and will be perfect at the finish... --- Last Edited by 76Trombones at 2012-03-17 14:15:02 --- Attachments leg5GC.jpg (47.4 KB) leg5GCthumb.jpg (8.6 KB)
Posted by AcmeRacing Posts 13 Registered at 2007-12-24 06:18:02	2012-03-17 16:46:49 - Re: Leg 5 Volvo Ocean race
	76 Trombones. I will agree with your theory that we are using the south pole for distances. Then, I am presently 200 miles closer to the south pole than the leader and I am still listed as 1400 miles behind them? I am sorry but your theory doesn't add up with the rankings. --- Last Edited by AcmeRacing at 2012-03-17 16:47:47 ---
Posted by sol Posts 296 Registered at 2008-08-14 11:08:14	2012-03-17 17:23:01 - Re: Leg 5 Volvo Ocean race
	Don't worry about it! You'll pop out the other side soon. Each boat uses a different point to calculate DTG, based on what is the shortest path to the next rounding (when it says "rounded", not the mark). Mrnil is currently calculating through the Horn, as that is the closest point on the rounding line from his position. Small distances N/S make a huge difference due to the very shallow angle the Cape Horn mark makes in the GC route. Bottom line is that all the rankings are consistent (consistently "wrong" according to where we will actually sail) and will sort themselves out by the end.
Posted by 76Trombones Posts 362 Registered at 2009-08-03 18:04:56	2012-03-17 17:43:39 - Re: Leg 5 Volvo Ocean race
	That was me... And you'll notice that you've made the transistion to #1! I admit that it's not intuitive.
Posted by AGage Posts 411 Registered at 2008-12-27 10:31:57	2012-03-23 14:28:34 - Re: Leg 5 Volvo Ocean race
	A different perspective on the race: (thumbnail) I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Posted by AGage Posts 411 Registered at 2008-12-27 10:31:57	2012-03-25 10:11:05 - Re: Leg 5 Volvo Ocean race
	Sunday 25/03@1000z: I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__

Page: 1 2 Next

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Flight of the Godwit - Hegura to Anchorage 2024

Welcome to the second flight of our bar-tailed Godwit!. This race is the second of three legs reflecting the bird's annual migratory route, and simultaneously the fifth leg of the 2024 Ocean Race Championship. The voyage promises to be not only a test of skill and strategy but an immersive experience in the beauty of the archipelagos of the Aleutian Islands. Join us as we push the boundaries of seafaring prowess on this epic adventure. Let's fly like a godwit!
PRIZE: SMPF
Race #1791
INFOby brainaid.de
Maxi Trimaran PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - GWT - OCCH - SUPSOL - SYC
Race starts: May 06th 11:00 Registration will open soon

▶ Flash

GO TO RACE

Bay to Bay 2024 - Leg 2 - Great Sandy Stait

Get ready for another spectacular day on the water with the second and final race of our thrilling series! This time, the challenge extends to an ambitious 21-nautical-mile course through the scenic Great Sandy Strait of Australia. After a joyful post-race BBQ, our daring sailors will once again take the helm of their Seascape 18s! Expect more high-speed action, strategic sailing, and, of course, another fantastic BBQ to celebrate the end of this exciting series!
Race #1802
INFO from brainaid.de
Seascape 18 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: B2B - SYC
Race starts: May 04th 21:30 Registration will open soon

▶ Flash

GO TO RACE

Bay to Bay 2024 - Leg 1 - Great Sandy Strait

Prepare for an adrenaline-packed race as the pristine waters of the Great Sandy Strait beckon for a thrilling showdown! This first race of our two-race series stretches over an amazing 16-nautical-mile course, with our skilled sailors at the helm of their Seascape 18s. With fierce competition and a fantastic post-race BBQ awaiting our sailors at the finish line, what more could we ask for?! Brace yourself for a fascinating adventure and we look forward to seeing you at the start line!
Race #1801
INFO from brainaid.de
Seascape 18 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: B2B - SYC
Race starts: May 04th 01:00 Registration will open soon

▶ Flash

GO TO RACE

Melbourne to Osaka Prelude 2024

Welcome once again to what these days is Sailonline’s almost annual virtual Melbourne to Osaka Yacht Race. In real life, this double-handed 5500 nm race between these two sister cities, one deep in the southern hemisphere, the other high in the northern hemisphere, is run every four to five years, and is planned to be held again in 2025, so this race is a Prelude in partnership with the Melbourne Osaka Cup 2025 organising committee collaborating with the Ocean Racing Club of Victoria (ORCV), and the Sandringham (SYC) and Osaka Hokko (OHYC) yacht clubs. On this occasion, we’ll be racing the well-known First 40, a popular size of boat for a long-distance double-handed race. With the doldrums unavoidably lying across the track, you can expect to be at virtual sea for at least a month!
Race #1669
INFO by brainaid.de
First 40 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Apr 20th 00:00 Registration Closed

▶ Flash

GO TO RACE

Cape Town to Auckland 2024

Welcome to the second leg of this Round The World series 2024. It's also the April edition of this year's ocean race championship. The course is the same as the one sailed in 2023, but this year we sail the iconic Swan 65, as suggested in the concluding RTW race last year.
Prepare yourselves for an epic 30-day journey, navigating through the unpredictable waters of the South Seas. It's essential to take care of provisioning to ensure a smooth and enjoyable race experience. With the longer duration, we anticipate plenty of opportunities for camaraderie, competition, and unforgettable memories.
PRIZE: SMPF
Race# 1789
INFO from brainaid.de
Swan 65 PARTICULARS
WX updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - RTW - OCCH - SUPSOL - SYC
RACE CLOSE: Sunday,
May 5 at 2300 UTC.
Race starts: Apr 01st 11:00 Registration Closed

▶ Flash

GO TO RACE

Go to race archive

SYC Ranking

View full list

Series

Mobile Client

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

The mobile client