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Profile for thorenj



Name thorenj
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  • 2013-03-13 12:06:30
    Re: Extrapolating boat performance
    Board » Technical Support
    I only have some limited experience working with polars, mainly from my bachelor's thesis in hydrodynamics, but i would suggest something along the lines of:

    BS(TWS)=BS(max polar TWS)+(TWS/(max polar TWS))x((max polar TWS)-(2nd max polar TWS))

    Hope I got that right... ;-)

    /thorenj

    --- Last Edited by thorenj at 2013-03-13 12:06:55 ---
  • 2013-03-10 13:24:42
    Re: Extrapolating boat performance
    Board » Technical Support
    Yes, obviously reefing will be important, but:

    a) As far as i know, reefing is already incorporated in the (nature of) polars, the boat speeds on beating wind angles seems to indicate this.

    b) The boat speed gets "stuck" to the maximum speed of the polar plot graph. Coincidence?

    Since we obviously can't have polars for infinite wind speeds, I believe that extrapolating the highest plotted wind speed will be the most accurate simulation. To improve realism, maybe the extrapolation could in fact be interpolation, but "above" the highest comparing value, to incorporate said reefing and wind angle-dependent factors.

    best regards,
    thorenj

    --- Last Edited by thorenj at 2013-03-10 13:31:57 ---
  • 2013-03-08 14:24:16
    Extrapolating boat performance
    Board » Technical Support
    Hi all - SOL developers in particular!

    As you may have noticed, in the current NYC-SFO race we have had stronger winds than those represented in the boat polar. When I took a closer look at what performance I got in winds of 40 knots or above, it seemed to me that the race server does not extrapolate boat speeds above what can be plotted in the graph in the client. Has anyone else experienced this? If this is an accurate observation, can it be rectified?

    best regards,
    thorenj

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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!
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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
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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!
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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
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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
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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
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Falklands to Tasmania 2026

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Race #2021
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