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September 2010 change to Class rules allowing the use of Main Cunningham.
ISAF 420 Class Rules page International 420 Class Rules are published by ISAF on the ISAF website. This link takes you to the 420 Page.
Don O'Donnell's (ISAF Measurer) advice on buying 2nd hand boats
Fairly old (Rondar) general tuning guide
Direct link to Speed Sails Website
Taken from the Lenam website
A pdf taken from the Tony Tio website
Allspars Tuning Guide Direct link to Allspars website
Matt Burge's beginner's guide on how much and when to Barber Haul the jib.
Matt Burge's guide on how to safely alter your mast rake between races
Matt Burge's beginner's guide on when and how much to use chocks to straighten the mast.
Matt Burge's beginner's guide on how to set up your mast rake
Matt Burge's beginner's guide on setting up your spreaders
Matt Burge's beginner's guide on setting up and getting the Mainsheet Bridle the right length.
Matt Burge's General Summary of Rig Settings for beginners.
A pdf taken from the Toni Tio website listing their range of Sail Models
Bow Numbers Bow numbers shall be fixed to both sides of the bow as illustrated. If a bow number becomes lost or damaged so that in the opinion of the Race Committee it is unclear or unreadable it must be replaced before the first race of the following day. Numbers used must be from digital 8s, 24cm (10") in height.
Numbers should be positioned:
* Within the first 600mm of the hull;
* 150-200mm from the bow
* 50-75mm below the gunwale
* top edge parallel to the gunwale
* 25-50mm gap between digits.
It is usually easiest to use one of the offcuts from the digital 8 as a spacer.
Numbers are allocated by the Class, usually to the Helm. Provided you sail at a minimum of 1 class major event each year, the number will remain with you whilst you remain a member of the class. If you do not have a bow number, please contact the Results Officer.
Measurers Measurers are approved by the RYA - for the current listings of Full, Maintenance and Sail Measurers, click above,
The 420 Class Dinghy The 420 is an established worldwide
performance two person trapeze and spinnaker racing dinghy.
There are 56,000 worldwide. This popular dinghy is sailed at
school, club, open, national and international levels. There are many second hand boats available, active clubs and excellent
tuition for all levels.
Built in buoyancy tanks make the boat very safe even when inverted. The 420 is the youth
development boat in 43 countries around the world and is the ISAF Youth World Championship boat. Despite the emergence of newer
commercial driven classes and asymmetrics, the 420 is still the world's top youth training boat.
Specification Length 4.2 m
Beam 1.63 m
Mast 6.26 m
Sails Main 10.25m2, Jib 2.8 m2, Spinnaker 9 m2.
Bare hull weight 80 kg min
Sailing weight 100 kg min
The ideal competitive combined crew weight
is 17 to 23 stone (110-145Kg).
3D Computer Generated Model
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