420

Class symbol
A 420 under sail
Development
Designer	Christian Maury
Location	France
Year	1959
Design	One-Design
Role	Youth trainer, racing
Boat
Displacement	100 kilograms (220 lb)
Draft	0.965 metres (3 ft 2.0 in)
Trapeze	Single
Hull
Type	Monohull
Construction	GRP
Hull weight	80 kilograms (180 lb)
LOA	4.20 metres (13 ft 9 in)
Beam	1.63 metres (5 ft 4 in)
Hull appendages
Keel/board type	Centerboard
Rig
Rig type	Bermuda
Mast length	6.26 metres (20 ft 6 in)
Sails
Mainsail area	7.45 square metres (80.2 sq ft)
Jib/genoa area	2.8 square metres (30 sq ft)
Spinnaker area	8.83 square metres (95.0 sq ft)
Upwind sail area	10.25 square metres (110.3 sq ft)[1]
Racing
D-PN	97.6[2]
RYA PN	1087[3]
[edit on Wikidata]

TheInternational 420 Dinghy is a sailingdinghy popular for racing and teaching. The hull isfiberglass with internal buoyancy tanks. The 420 has abermuda rig,spinnaker andtrapeze. It has a large sail-area-to-weight ratio, and is designed toplane easily. The 420 is an International class recognised byWorld Sailing. The name refers to the boat's length of 420 centimetres (4.2 m; 13 ft 9 in).

The International 420 was designed by Christian Maury in France in the year 1959. The class developed rapidly in France, being adopted nationally as a youth trainer for the larger Olympic class International470. By the late 1960s the class was adopted by a few UK university sailing clubs for training and team racing.

The class adopted a policy of "prudent evolution" so as to allow development without making existing dinghies obsolete. The hull's seaworthiness and stability at speed proved to be better than most of its contemporaries, and this together with its modest sail area make it fun to sail in heavy weather and thus an excellent youth trainer, qualities that led to its adoption for that role by theRoyal Yachting Association in the mid-1970s. In addition, the international 420 is known for its inherent lightness. The floatability of the boat made for a safer training vessel.^[4]

With itstrapeze andspinnaker it provides the capability for advanced sailing techniques for international standard sailors, while still remaining affordable and accessible to beginners. The International 420 maintains a large multinational class association. The combination of effective class management, the boat's inherent sailing qualities, and prudent evolution have contributed to the class's continuing success.

The Club 420, or C420,^[5] was derived from the 420 by Vanguard boats in the 1970s. It is not recognized byWorld Sailing or the International 420 Class Association and cannot be used at I420 class events.

Itt is much simpler to sail and is used on the youth race circuit in the US, with over 5,000 boats in North America,^[6] but is not sailed in most other countries.

With a heavier hull, reinforced for durability in institutional sailing, and a stiff, untapered mast it lacks the performance of the original dinghy due to its extra weight.

The Z420 is a transformation of the Club 420. Its hull is 50 pounds (23 kg) lighter and 40 percent stiffer than the C420. Whereas a C420 hull is composed of six pieces, the Z420 has only three molded components: the hull, the deck, and the mast partners. Unlike the C420, the Z420 does not include a spinnaker or trapeze in its rigging. Z420 boats are specially designed forcollege sailing and were used at theInter-Collegiate Sailing Association National Championships in 2014 for the first time.^[7]

Held every year since 1973 organized by the International 420 Class Association and recognised byWorld Sailing.Three fleets current race separately which are the Male & Mixed, Female and Open Under 17.

The boat has been used for team racing in both theISAF Team Racing World Championship and theISAF World Sailing Games however the class established its own team racing competition in 2015. Only theInternational 14 andOptimist (dinghy) class association hold a team racing based World Championships in addition to the two discipline led events.

Year	Gold	Silver	Bronze
2015 Lake Garda[8]	Spain[a]	Italy	Portugal
2016 Lake Garda[10]	Spain[b]	Spain	Italy

Year	Gold	Silver	Bronze
1978Monnickendam	Cathy Foster (GBR)  Wendy Hilder (GBR)	Marie Chrustine Hue (FRA)  Claire Lefur (FRA)	Genevieve Levaillant (FRA)  Blandine Levaillant (FRA)
1978Rochester	Cathy Foster (GBR)  Wendy Hilder (GBR)	Taylor (USA)  Lewis (USA)	Currey (GBR)  Blake (GBR)
1980 Skovshoved	Christina Mazzaferro (ITA)  Emanuela Galeazzi (ITA)	Anna Bacchiega (ITA)  Paola Bacchiega (ITA)	Marie-Christine Hue (FRA)  Claire Le Fur (FRA)
1981 Stintino	Christina Mazzaferro (ITA)  Manuela Galeazzi (ITA)	Cathy Foster (GBR)  Wendy Hilder (GBR)	Anna Bacchiega (ITA)  Nives Monico (ITA)
1989 Palma	Nuria Bover (ESP)  Sylvia Summer (ESP)	Giorgia Gaudino (ITA)  Sara Gaudino (ITA)	Stephanie Pornin (FRA)  Rouan (FRA)

The class has been used extensively at theYouth Sailing World Championships which run byWorld Sailing this is different to the Class Worlds by way that equipment is supplied and entries are limited to one entry per nations but often from more nations.

Wikimedia Commons has media related to420 (dinghy).

• Official international class website
• Official UK class website
• Official Austrian class websiteArchived 2011-01-28 at theWayback Machine
• Club 420 Association, Inc. official website

• 420 (dinghy)
• Dinghies
• Sailboat types built by Grampian Marine

• CS1 maint: numeric names: authors list
• CS1 Spanish-language sources (es)
• Articles with short description
• Short description is different from Wikidata
• Commons category link from Wikidata
• Webarchive template wayback links