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 » Flag Officers » Races » Victoria-Maui Tactics Articles

Posted by
76Trombones


Users avatar

Posts
362
Registered at
2009-08-03 18:04:56
2010-06-29 13:58:19 - Victoria-Maui Tactics Articles
The website for this year's running of the Vic-Maui Yacht Race has some interesting reading on tactics and descriptions of past races.

The North Pacific High (visible as the big low-wind area at ~40N in SOL, wind circles clockwise) is a semi-permanent feature throughout the summer that typically dictates routing for the race.

http://www.vicmaui.org/resource?articleid=45
Posted by
captjack1942


Users avatar

Posts
239
Registered at
2008-01-18 03:24:03
2010-06-29 21:25:55 - Re: Victoria-Maui Tactics Articles
It should be noted that the Pacific High (as the area of low to no wind is called) has been staying pretty far north this year. If this pattern holds up, this could be a year of record times. Not only for the Vic/Maui race, but also for the Pacific Cup race.

http://www.pacificcup.org/

--- Last Edited by captjack1942 at 2010-06-29 21:27:46 ---
Posted by
Exmeromotu


Users avatar

Posts
71
Registered at
2008-12-10 15:22:17
2010-07-02 15:44:14 - Re: Victoria-Maui Tactics Articles
Public Service Anouncement:
Courtesty of Bluewater Racing, see attached pic, time of pic 1435Z

Optimal Route is in black, the closer you stay inside the red area the better...

2nd Pic Optimal Route is in yellow.

3rd Pic for 7/3/2010 12Z

4th Pic 7/4/2010 12Z (from Gilles (leader) Position)
Optimum Route is in Yellow (Follow the Yellow Brick Road ;-) )
Wide red area shows that there are plenty of routes that will get you pretty quick to Maui

5th Pic for 7/5/2010 12Z (from my position)
Optimum Route in Yellow
The Red Zone is a LOT Wider than from last update, banging a corner might just be the ticket...

6th Pic Optimum Route in Orange with reverse isochrones in 2 hour time steps time of fix 7/6/2010 0715 UTC

Regards

--- Last Edited by Exmeromotu at 2010-07-03 00:26:54 ---

--- Last Edited by Exmeromotu at 2010-07-03 14:36:14 ---

--- Last Edited by Exmeromotu at 2010-07-04 16:07:14 ---

--- Last Edited by Exmeromotu at 2010-07-05 14:16:46 ---

--- Last Edited by Exmeromotu at 2010-07-06 08:02:06 ---
Attachments
Posted by
Gilles


Users avatar

Posts
127
Registered at
2009-07-18 11:05:22
2010-07-04 19:15:50 - Re: Victoria-Maui Tactics Articles
Nice that you make the homework for me.... but difficult to read the angle or the latitude on the graph :-(

Cheers!!!
Posted by
76Trombones


Users avatar

Posts
362
Registered at
2009-08-03 18:04:56
2010-07-06 16:40:21 - Re: Victoria-Maui Tactics Articles
Here's another look at reverse isochrones, calculated from Exmeromotu's position and .5deg grib.us weather. Colour bands/contours are 2h intervals.

Tight race!
Attachments
Posted by
Exmeromotu


Users avatar

Posts
71
Registered at
2008-12-10 15:22:17
2010-07-06 18:47:23 - Re: Victoria-Maui Tactics Articles
Impressive!! How did you get the fleet positions into Bluewater?
Posted by
76Trombones


Users avatar

Posts
362
Registered at
2009-08-03 18:04:56
2010-07-06 19:00:49 - Re: Victoria-Maui Tactics Articles
Not bad eh? I'm impressed with how flexible bluewaterracing is.

http://sailonline.org/googleearth/race_245_data.kml

I imported the data from the kml. You can bring it in as route data and each boat will show up as mark.

To import as position data (each boat becomes it's own route, can be "routed to finish" and if you were to update regularly would have all the tracks saved as well) I converted the xml/kml to csv/text.

Pretty neat - since all the course data,config,polar etc are text files for very little effort you should be able to pretty much fully integrate BWR with SOL. Marks/courses can be loaded from the kml as well, so no need to manually define the race.

Posted by
Exmeromotu


Users avatar

Posts
71
Registered at
2008-12-10 15:22:17
2010-07-07 07:06:01 - Re: Victoria-Maui Tactics Articles
For whoever is interested here's a copy of the Riptide 50 polar for Bluwater

--- Last Edited by Exmeromotu at 2010-07-07 07:07:18 ---
Attachments
Posted by
Schakel


Users avatar

Posts
183
Registered at
2008-12-19 09:19:00
2010-07-07 07:15:39 - Re: Victoria-Maui Tactics Articles
Hmm, odd. I get slightly different figures using the polar I get from the client Help tab's Boat Polar option.

For instance, at ws 10, twa 30 you have a bs of 6.17 whereas I get a bs of 6.27.

Wonder how that happened?

Philip

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Cross the Convergence 2026 - Masirah to Chagos


Having crossed, re-crossed and re-re-crossed the Convergence Zones of the Pacific and the Atlantic, we now face our second crossing of the Convergence Zone of the World’s third great equator-spanning sea, the Indian Ocean, taking us from the channel between Masirah Island and the Oman mainland to the Chagos Archipelago. It’s 1900nm and we’ll be sailing our very fine Archer 78, and won’t mention that both locations (of departure and arrival) are heavily militarized and the why’s and what next’s concerning that – mindful as always of SOL Netiquette.
Race #1988
INFOby brainaid.de
Archer 78PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: CCZ - SYC
Race starts: Oct 02nd 18:00 Registration will open soon
▶ Flash
GO TO RACE

Carib Rum Run 2026


Ahoy, ye landlubbers and seasoned salts! Welcome back to Sailonline’s legendary Carib Rum Run, perfectly timed to kick off on International Talk Like a Pirate Day, 19 September!

This year, we command the magnificent Falkun—the ultimate high-tech superyacht modeled after the iconic Maltese Falcon. This 1759nm slalom takes us through the Caribbean’s rum islands to plunder barrels from local distilleries and deliver them to the rum-parched sands of Cancun.

Join SYC before the finish to disguise yer boat with a pirate name for this race only. Hoist the sails, sharpen yer cutlasses, and plot your winning course!
Race #2060
INFO by brainaid.de
Falkun PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Sep 19th 05:00 Registration Closed
▶ Flash
GO TO RACE

Shearwater - Rio de la Plata to Irish Sea 2026

Welcome to the fourth leg of our MIG series. This time we're racing the Sooty Shearwater on their migration from the breeding grounds in South America to the northern Atlantic. This is also part of our Ocean Championship, and as such the third race of OCQ3 2026. This race will be sailed in our Gunboat 90. Race #2055
INFO by brainaid.de
GunBoat 90 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
OCQ3 - OCCH - SYC - MIG
RACE CLOSE: Thursday,
October 1 at 2300 UTC.
Race starts: Sep 02nd 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 Panpyc
  6. Sailonline Yacht Club Member cdhinman
  7. Sailonline Yacht Club Member rumskib
  8. Sailonline Yacht Club Member rthinman
  9. Sailonline Yacht Club Member BRENTGRAY
  10. Sailonline Yacht Club Member Sax747

View full list

Series

Mobile Client

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

The mobile client