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Profile for Chappo



Name Chappo
Email Address peter@mindmechanics.com.au
AvatarUsers avatar
Posts53
  • 2012-05-24 23:23:08
    Re: Minor Beta update 23 May
    Board » Technical Support
    Aaron
    There seems to be no limit to the clever, convenient enhancements you keep adding. Your Optimum Angles tool saves me a lot of computing time, many thanks (and my wife says thanks too!)
  • 2011-12-12 03:18:44
    Re: SOL World Race: Leg 2 Analysis
    Board » Flag Officers » Races
    I have been tweeting Askel Magdahl, the navigator on Sanya who pulled off that clever passing move to win the Rio leg of the last Volvo race on Eriksen 3. He said he uses Expedition and Deckman plus some of his own routing software. I wonder what course he is working on for this Dhabi leg??
  • 2011-11-21 02:22:01
    Re: General System Spec - to aid SOL development
    Board » Technical Discussion
    3 year old desktop, 19 inch screen accessing via Firefox

    Microsoft Windows XP Professional
    Intel Core2 6400 2.13GHz @ 2128 MHz
    Graphics Card: 256MB ATI Radeon X1300PRO

    2046 MB System RAM (Score: 104)
    - RAM Speed: 3191 MB/s

    CPU Tests (Score: 210)
    - Floating Point Operations/Second: 50669288
    - Integer Operations/Second: 123177326
    - MD5 Hashes Generated/Second: 710277

    Graphics Tests (Score: 33)
    - 3D Frames Per Second: 112

    Hardware Tests (Score: 10)
    - Primary Partition Capacity: 298 GB
    - Drive Write Speed: 11 MB/s

    Nova Bench score 354

    Internet download rate 1.78 Mbps

    Screen resolution 1280 by 1024
  • 2011-06-02 11:00:39
    Re: Gain or loss by using TWA
    Board » Technical Support
    How do you find time for work Aaron, you have been very busy creating tools, updating your blog, being very competitive in SOL and now working on SOL development! That sounds like a very flash tool you are working on so I will keep an eye on your blog. Thanks for your great work.
  • 2011-06-02 04:25:14
    Re: Gain or loss by using TWA
    Board » Technical Support
    *8MR, I am not an IT guru but wouldn't these choices be made by the SOL server when you are looking at the forum and perhaps it is configures any large attachments that cannot physically be displayed in the message as attachments only.
  • 2011-06-02 02:58:29
    Re: Gain or loss by using TWA
    Board » Technical Support
    8MR, I see the diagram embedded in the post and as an attachment too?
  • 2011-06-02 02:54:50
    Re: Gain or loss by using TWA
    Board » Technical Support
    Excellent summary 76. I presume it is not to scale but broadly highlights the distance differences. It certainly makes a good case for twa but as Aaron notes, just because the fast yachts have curved tracks, often actually reflects continuously adjusting VMC sailing rather than TWA sailing.
  • 2011-06-02 01:46:19
    Re: Gain or loss by using TWA
    Board » Technical Support
    Good points Aaron, it is easy to work with confidence when plotting within 6 hour weather cycles, much more challenging after 6 hours so CC is a safe option. We have all seen some big shift between weather updates. I note you mentioned you have written a small tool that calculates both max VMG (for upwind & downwind) for a given TWS – , and also maximum VMC given input of TWS, TWD and a CC to the waypoint. Does it link to an uploaded polar or does it just require manual input based on different angles and BS from the polar at the time you choose to do a calc. Is that tool available for download somewhere? I use my simple worksheet attached for my max VMC calcs. I find it pretty good downwind, can be misleading upwind.
  • 2011-05-30 23:14:02
    Re: Can't get rankings and race leaderboards
    Board » Technical Support
    Thanks Jack. Yep I am on the work computer where I am getting the Leaderboard and Rankings. I will check my home PC.
  • 2011-05-30 02:50:42
    Re: Gain or loss by using TWA
    Board » Technical Support
    I have taken advantage of the speed difference of CC or TWA in different races and yachts. I am not an expert but I think the differences come from various factors such as the shape and position you are sailing on the polar, whether you are sailing into a heading or lifting wind change and whether you are going upwind or downwind. So even though the CC is a shorter course, that advantage can often be offset by the fact that the last part of the CC course is so much slower than the TWA course (when sailing upwind into a header, or at the start of a CC course into a freeing wind change, the CC course is much slower than the TWA course.

Races

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Current Races:

Brisbane to Keppel Tropical Yacht Race 2025


When the winter weather turns cool in southern Australia sailors head up to the warmer waters of The Great Barrier Reef and the big winter regattas at Hamilton Island, Airlie Beach and Magnetic Island. But the race isn’t ‘on’ this year; nevertheless, Sailonline is inviting all racers from RQYS and beyond to race the 343 nm for the fun, this time in our SOTO 40. It might be winter downunder but do put on your shorts and t-shirts before you sit down behind your devices to get into the spirit of it all!
Race #1921
INFOby brainaid.de
SOTO 40 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Jun 19th 01:00 Registration Open!
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Pantaenius Shetland Race 2025 - Leg 1

Prepare your sails and brace for exhilaration—it's time once again to embark on the thrilling journey from Norway's stunning outer Korsfjorden to the ruggedly beautiful Shetland Isles! Welcome to the first electrifying leg of Sailonline's celebrated two-race Shetland Series. Spanning nearly 190 nautical miles, this year's challenge features the Salona 39, masterfully designed in collaboration with Maurizio Cossutti. Sailonline proudly partners with this iconic race, bringing sailors from around the globe together to test their strategic prowess and seamanship. Whether you're a seasoned veteran or setting out on your first virtual adventure with us, get ready for an unforgettable race filled with intense competition, breathtaking scenery, and the sheer joy of sailing. The North Sea awaits—let the adventure begin!
Race #1922
INFO by brainaid.de
Salona 39 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
SHE - SYC
Race starts: Jun 18th 11:00 Registration Open!
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Haugesund to Reykjavik 2025


In late April 2016 Draken Harald Hårfagre, the worlds largest viking ship built in modern times, left her home port in Haugesund, Norway and sailed off for a challenging voyage across the North Atlantic Ocean.
The aim was to explore and relive one of the most mythological sea voyages – the first transatlantic crossing, and the Viking discovery of the New World, more than a thousand years ago. History tells us about the Viking explorer, Leif Eriksson, who discovered America over 500 years before Christopher Columbus. The expedition was all about exploring the world, just like the Vikings did.
Sailonline is racing the 1000 nm first leg, from Haugesund, Norway, to Reykjavik, Iceland in our Farr 400. Let us sail in the wake of history on this epic adventure!
Race #1913
INFO from brainaid.de
Farr 400 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ2 - ARCH - SUPSOL – SYC
Race starts: Jun 16th 17:00 Registration Open!
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Africa by Sea - Swakopmund to Maputo 2025


Time again to continue our exploration of Africa by Sea, which now takes us around the tip of the continent at Cape Agulhas and up the coast of South Africa to Mozambique’s marvellous Maputo, where we should find good anchorage in the bend of the Rio Espirito Santo (Umbuluzi) once we’ve cleared the 60m high Maputo - Katembe suspension bridge. It’s 1900nm and we’ll be glad to be sailing our comfortable and sturdy Xp-55, as we will certainly experience more headwinds!
Race #1857
INFOby brainaid.de
Xp-55 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - ABC
Race starts: Jun 11th 17:00 Registration Open!
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Marquesas to Young Island 2025

The adventure continues as we launch this fourth leg of the RWW series, racing from Marquesas to Young Island in the Balleny Islands, a group of islands in the Southern Ocean only 62 nm from Antarctica. Get ready for a chilling new challenge as we set sail on the sixth leg of the 2025 Ocean Championship Series! A 4100nm journey of endurance, strategy, and pure sailing excitement. This leg will be pursued aboard the race machine RP66, pushing sailors to their limits. Do you have what it takes to conquer the Southern Ocean? Join us and put your skills to the ultimate test!
PRIZE: SMPF
Race #1909
INFO by brainaid.de
Raichel/Pugh 66 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - RWW - OCCH - SUPSOL - SYC
RACE CLOSE: Saturday,
June 21 at 2300 UTC.
Race starts: Jun 02nd 11:00 Registration Closed
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