Javelin Association of Great Britain
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        • Kielder 5/6 May
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        • Lymington 13/14 July
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      • 2018 Season >
        • March - DinghyShow
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        • October - Rutland SC
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        • 28 & 29 October Rutland
        • 30 Sept - Buckenham Triple B
        • 6 August - Anglesey Offshore race
        • 23-28 July Euros
        • 24th & 25th June - Bala Long distance race
        • 17-18 June 17 Southwold
        • 27 & 28 May - Carsington Open
        • 20-21 May 17 - Lymington to Cowes cruise
        • 30 April Keilder Dam to Dam
        • 22 & 23 April - Glossop Open
      • 2016 Season >
        • Bala Open 8/9 October
        • Euros Holland
        • Inlands Carsington
        • Nationals Southwold
      • 2015 Season >
        • Bala Long Distance
        • Bala Open
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        • Nat's. Southwold
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        • Nat's 8/9 June 13
        • 2013 Euros Tjeukemeer, Holland
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        • Carsington Open
        • Nationals Southwold
      • 2010 Season
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        • 2008 Season >
          • 2007 Season >
            • 2005 Season >
              • Bridlington Nationals
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  • History
  • Gallery
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    • Event Videos
    • Javelins
  • Technical
    • Control systems
    • How to improve an old Javelin?
    • How to go fast
    • Lines & elastic lengths
    • Mast Control
    • Sail Measurement
  • HOME
  • About
  • Membership
    • Articles >
      • 30 years Javelin
      • Boat Launch
      • Bought an old Javelin? >
        • How to refurbish an old Javelin?
      • Build Years
      • Editorials >
        • 1969 boat test
        • 1968 Yachts & Yachting
      • Humour
      • International >
        • BOAT REGISTER >
          • BOAT REGISTER
        • Germany
        • Netherlands
        • United Kingdom
      • Javelin wives
      • Original Adverts >
        • Paul Wright - 1970's
        • Paul Wright - 1980's
      • Pull on your wires
    • Clubs & Venues
    • Committee >
      • Past Committees
    • Honorary
    • International Ass.
    • Join/Renewal
    • Rules >
      • Class rules
      • Constitution
      • ISAF Rules
      • Standard Class Rules
    • Stolen
    • TROPHIES
    • Yearbooks
  • Builders
    • JJ Boats 13-20
    • Jeff Green 03-13
    • B Bootsbau 01-05
    • Porter Bros. 00-03
    • Tony Lincoln 90-00
    • Fröschke 90-92
    • Paul Wright 72- 89
  • EVENTS
    • 2021 Season >
      • Lymington Regatta 3/4 July
      • Nats. 24-26 July 2020
      • Filey 31 - 1 Aug
      • Carsington 16/17 Oct
    • Past Seasons >
      • 2020 Season >
        • Dinghy Show 2020
        • Bala Massacre 15th March
        • Kielder 9/10 May
        • Filey 20/21 June
        • Lymington Regatta 11//12 July
        • Euros 26-31 July 2020
        • Nationals Glossop 3/4 Oct 2020
      • 2019 Season >
        • Dinghy Show 2019
        • Kielder 5/6 May
        • Filey 29/30 June
        • Lymington 13/14 July
        • Euros 26-31 July
        • Nat's. 24-25 August
        • Carsington 14/15 Sept
        • Rutland 19-20 Oct
      • 2018 Season >
        • March - DinghyShow
        • April - Glossop
        • May - Inlands
        • June - Nationals
        • July - European
        • October - Rutland SC
      • 2017 Season >
        • 28 & 29 October Rutland
        • 30 Sept - Buckenham Triple B
        • 6 August - Anglesey Offshore race
        • 23-28 July Euros
        • 24th & 25th June - Bala Long distance race
        • 17-18 June 17 Southwold
        • 27 & 28 May - Carsington Open
        • 20-21 May 17 - Lymington to Cowes cruise
        • 30 April Keilder Dam to Dam
        • 22 & 23 April - Glossop Open
      • 2016 Season >
        • Bala Open 8/9 October
        • Euros Holland
        • Inlands Carsington
        • Nationals Southwold
      • 2015 Season >
        • Bala Long Distance
        • Bala Open
      • 2014 Season >
        • Nat's. Southwold
        • Euros Zwischenahner Meer
      • 2013 Season >
        • Nat's 8/9 June 13
        • 2013 Euros Tjeukemeer, Holland
      • 2011 Season >
        • Carsington Open
        • Nationals Southwold
      • 2010 Season
      • 2009 Season >
        • 2008 Season >
          • 2007 Season >
            • 2005 Season >
              • Bridlington Nationals
              • Carsington Open
              • Glossop Open
            • Euros Hourtin
            • Southwold Open
          • Euros Travemunde
          • National Championships
        • Alton Water Open
        • Glossop Nationals
        • Southwold Euros
      • 2006 Season
      • 2005 Season
      • 2004 Season
      • 2003 Season
  • Facebook
  • For Sale
    • Used for sale
    • Insurance >
      • Craft Insure
      • Mercia Marine Insurance
      • Noble Marine Insurance
    • Masts >
      • Seldon
      • Super Spars
    • Parts >
      • Spin. guy cleat bracket
      • Twin Pole System
    • Sails >
      • Hyde Sails
      • North Sails
      • Pinnel & Bax
      • Speed Sails
      • Ullman Sails
  • History
  • Gallery
    • Event Photos
    • Event Videos
    • Javelins
  • Technical
    • Control systems
    • How to improve an old Javelin?
    • How to go fast
    • Lines & elastic lengths
    • Mast Control
    • Sail Measurement
Javelin Association of Great Britain

Sailing Performance Survey

Most sailing is not done in order to achieve a maximum speed, but in order to go from one point to another. In most sailboat racing the objective is to sail a certain distance directly upwind (to a point called the upwind mark), and then to return downwind, as fast as possible. Since sailboats cannot sail directly into the wind, they must tack in order to reach the upwind mark (this process is called beating or working to the mark). This lengthens the course, thus the boat takes longer to reach the upwind mark than it would if it could have sailed directly towards it. The component of a sailboat's velocity that is in the direction of the next mark is called the velocity made good.

If a boat sails perpendicular to the wind, it will never reach the upwind mark. So, in racing, speed is not everything. What counts is the velocity made good, that is, the progress towards the upwind mark. Again, simple trigonometry can be used to calculate the velocity made good. ​Many boats can make good downwind faster by not sailing dead downwind, but instead gybing back and forth. If the boat can accelerate until the apparent wind is at angle off the bow, then it can make good downwind faster than the true wind.

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SAFE SAILING
The survey objective is to record sailing performance across a variety of wind strengths.
Submitted sailing records in wind speeds greater than force 6 will not be recorded.

​To enter your speed record go to click the button below.
Submit Speed Record
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