505 (dinghy)

The International 505 is a one-design high-performance two-person monohull planing dinghy, with spinnaker, utilising a trapeze for the crew.

International 505

Class symbol
Boat
Crew	2 (single trapeze)
Draft	1.45 m (4 ft 9 in)
Hull
Hull weight	127.4 kg (281 lb)
LOA	5.05 m (16.6 ft)
Beam	1.88 m (6 ft 2 in)
Sails
Spinnaker area	27 m^2 (290 sq ft)
Upwind sail area	16.26 m^2 (175.0 sq ft)[1]
Racing
D-PN	79.8
RYA PN	902
PHRF	149.4

History

The origins of the class began in 1953 with the creation of the 18-foot 'Coronet' dinghy designed by John Westell. This sailboat competed in the International Yacht Racing Union (IYRU) selection trials at La Baule, France, in 1953 for a new two-person performance dinghy for the Olympics. Although the Coronet lost Olympic selection to the Flying Dutchman, in 1954 the Caneton Association of France asked Westell to modify his design to create for them a 5-metre performance dinghy that would be suitable to their needs. Westell settled on a measured length 5.05 m to allow for boat-building tolerances of the day, and the resulting craft became known as the 505.

The class achieved international status with the IYRU in 1955.[2]

Fleets

The 505 is a very popular international class and is raced actively in 18 countries around the world, with the largest numbers in Germany, the US, UK and Australia. World championships are held every year at locations around the world, alternating between Europe, North America and Southern Hemisphere countries, and consistently attract over 100 boats to the start line. At the 2005 World Championships held in Warnemünde, Germany there were 171 boats. The 505 may also be sailed in a mixed fleet using the Portsmouth Yardstick handicap scheme. Its Portsmouth number (administered in the UK) is 902[3] and its D-PN (administered in the USA) is 79.8 .[4]

There are not many fleets in the conventional sense of boats parked side by side at a club and regular attendance at series-type 'club racing' is not typical for this class. The ease of trailering and storage of the boat coupled with its complexity, which makes it both engaging to tinker with and somewhat risky to leave untended in a parking lot, has led to many owners keeping their boats at home. Fleets are essentially collectives of sailors that keep in touch and train together at a convenient facility for the regional 505 event calendar, which may include perennial fixtures as well as regional, national or world championship regattas. Europe in particular has a well-attended calendar of events that attracts sailors from all over the continent because of the ease of travel and excellent venues (Hyeres, Lake Garda, Kiel, etc.).

Locales that have established core groups of 505 sailors are as follows:

Australia:	Brisbane, Coffs Harbour, Adelaide, Fremantle
USA:	Marblehead, Rye, Annapolis, Galesville, Clearwater, San Diego, Long Beach, San Francisco/Santa Cruz, Seattle/Bellingham
UK:	England (many locations), Scotland
Germany:	Kiel, Warnemünde
Rest of Europe:	Finland, Sweden, Denmark, France, Italy, Switzerland, Poland, Ireland, Belgium
Canada:	Ottawa/Kingston, Toronto, Vancouver
South Africa:	Port Elizabeth

The Boat

The hulls of early 505s were built in cold-molded marine plywood, new hulls are now built using composite molding: glass fibre and/or carbon fibre mats and vinylester or epoxy resin using either a wet layup technique or using heat-cured prepreg sheets. Hulls are usually cored with foam, balsa or Nomex to increase stiffness and durability, spars traditionally were manufactured from aluminium alloy, later rule changes have permitted the use of carbon fibre for boom and spinnaker pole.

The hull shape and sail plan are tightly controlled, while the spars, foils and rigging are more open which allows the boat's rig and controls to be set up to the preferences of the crew, rather than dictated by the class rules.

As of 2009, over 9000 505s had been built.

There have been many builders over the 60-year history of the class. At present Rondar Raceboats is the most prolific builder, producing wet-layup hulls on a semi-production basis. Ovington Boats, which at one time built hulls for Rondar under contract, now build their own.

List of current 505 hull builders:

Builder	Location	Description	Website
Rondar Raceboats	Great Britain	Hulls and complete boats	www.rondarraceboats.com
Ovington Boats	Great Britain	Bare hulls only	www.ovingtonboats.com
Parker 505	Great Britain	Bare hulls and complete boats	www.parker505.com
Van Munster Boats	Australia	Bare hulls and complete boats	www.vanmunsterboats.com
Duvoisin Nautique	Switzerland	Bare hulls only	http://duvoisinnautique.ch/en
BlueBlue	Poland	Bare hulls and complete boats	http://www.blueblue.pl/

It is typical for sailors to purchase bare hulls, spars and foils, and then rig the boats themselves. The result is that there is a wide variety of setups, with some notable regional preferences. For example, US boats traditionally have end-boom sheeting while German boats have mid-boom. This has led to the establishment of several rigging businesses, led by successful 505 sailors, that have developed standard rigging setups and sell complete boats based on bare hulls sourced from builders. These include Holger Jess with SegelsportJESS in Kiel, GER and Ian Pinnell of Pinnell & Bax in Northampton, GBR. Having standard setups with published tuning settings helps non-professional sailors become competitive more quickly. Similarly with sails. There is a handful of sailmakers that dominate the 505 class: Pinnell & Bax in the UK, Bojsen-Møller in Europe, Glaser and North in the US and Narval in Poland.

Sailing Characteristics

The 505 is a large boat by dinghy standards, with a powerful sailplan, especially with the adoption in October 2001 of a larger spinnaker.[5] The 505 will plane upwind in wind speeds of around 10 knots or more.

Preparation for schooner race (SAP 5O5 World Championship). The 505 is named for its length, 5.05 meters (16.5 feet).

Events

World Championships

Year	Gold	Silver	Bronze
1956 La Baule	France Jacques Lebrun P. Harrinkouck
1957 La Baule	Denmark Paul Elvstrøm Pierre Poullain
1958 La Baule	Denmark Paul Elvstrøm Pierre Poullain
1959 Cork	France Marcel Buffet Patrick Wolff
1960 La Baule	France Marcel Buffet Patrick Wolff
1961 Weymouth	France JC. Cornu D. Gouffier
1962 La Baule	Great Britain Keith Paul Bill Moakes
1963 Larchmont	Australia Brian Price Chris Hough	United States Henry Schefter Brian Smart
1964 Cork	Australia John Parrington Chris Hough	Great Britain Derek Farrant Robin Farrant	France Mathieu Tanon TBA
1965 Tanger	Great Britain Derek Farrant Robin Farrant
1966 Adelaide	Australia Jim Hardy Max Whitnall	Denmark Paul Elvstrøm Malcolm 'Pip' Pearson	Australia John B. Cuneo A. Martin
1967 La Baule	France B. Moret R. Morch
1968 Kiel	France Marcel Troupel Philippe Lanaverre	France Yves Pajot Marc Pajot	France Marcel Buffet Daniel Nottet
1969 Buenos Aires	Great Britain Larry Marks Victor Deschamps	Ireland Cudmore Bruen	Argentina Domato Sidmann
1970 Plymouth	Great Britain Larry Marks Victor Deschamps	Great Britain Gordon Wilson Philip Wilson	Great Britain Derek Farrant Robin Farrant
1971 Santa Cruz	Great Britain Derek Farrant Robin Farrant	United States Dave Vickland Pingree	Great Britain Peter Bainbridge
1972 Hanko	France Nicolas Loday Nicolas Fedorenko	France Bruno Levesque Jean-Luc Bapst	Finland Kari Wilén Jyri Wilén
1973 Hong Kong	Great Britain Peter White John Davies	United States Dennis Surtees Stephen Owens	France Yves Pajot Yvon Kergreis
1974 Marstrand	France Yves Pajot Marc Pajot	United States Dennis Surtees Stephen Owens	Sweden Björn Arnesson Göran Andersson
1975 Hamilton	Great Britain John Loveday Lewis Dann	France Jean-Marie Danielou François Richard	France Marcel Buffet Thierry Desfarges
1976 Lake Macquarie	Great Britain Peter Colclough Steve Jones	Australia Terry Kyrwood Reg Crick	Australia R. Nonris I. Rors
1977 La Rochelle	Great Britain Peter Colclough Phil Brown	United States Ethan Bixby Larry Tuttle	United States Steve Taylor Stan Honey
1978 Copenhagen	Great Britain Peter Colclough Phil Brown	Denmark Jørgen Bojsen-Møller Jacob Bojsen-Møller	Australia Terry Kyrwood Reg Crick
1979 Durban	United States Steve Taylor David Penfield	United States Dennis Surtees Paul Cayard	United States Dan Thompson
1980 Hayling Island	United States Steve Benjamin Tucker Edmundson	United States Jon Andron Howie Hamlin	Great Britain Peter Colclough Harold Barnes
1981 San Francisco	United States Ethan Bixby Cam Lewis	United States Steve Benjamin Tucker Edmundson	Denmark Jørgen Schønherr Anders Kæmpe
1982 Cork	United States Gary Knapp Cam Lewis	Great Britain Peter Colclough Harold Barnes	United States Steve Benjamin Tucker Edmundson
1983 Adelaide	Australia Terry Kyrwood Reg Crick	Australia Gary Bruniges Greg Gardiner	Australia Geoff Kyrwood Bob Kyrwood
1984 Gromitz	Australia Dean Blatchford Tom Woods	Great Britain Peter Colclough Harold Barnes	United States Howie Hamlin Rick Rattray
1985 Enoshima	Australia Gary Bruniges Greg Gardiner	Australia Dean Blatchford Tom Woods	Great Britain Peter Colclough Harold Barnes
1986 La Rochelle	Great Britain Peter Colclough Harold Barnes	Sweden Krister Bergström Magnus Holmberg	Sweden Jan Bergström Bengt Zachrisson
1987 Helsinki	Sweden Krister Bergström Olle Wenrup	Denmark Jørgen Holm Finn Jensen	Australia Dean Blatchford Tom Woods
1988 Sydney	Sweden Krister Bergström Olle Wenrup	Australia Dean Blatchford Tom Woods	Australia Stephen McConaghy Andrew McConaghy
1989 Felixstowe	Sweden Krister Bergström Per Anders Hallberg	Great Britain Peter Colclough Phil Brown	United States Bruce Edwards David Shelton
1990 Kingston	Denmark Jørgen Schønherr Anders Kæmpe	France Philippe Boite Jean-Luc Muzellec	Sweden Krister Bergström Olle Wenrup
1991 Marstrand	Sweden Krister Bergström Per Anders Hallberg	Great Britain Ian Pinnell Mark Darling	Denmark Jørgen Schønherr Anders Kæmpe
1992 Santa Cruz	Australia Chris Nicholson Darren Nicholson	Denmark Jørgen Schønherr Michael Poulsen	United States Bruce Edwards David Shelton
1993 Travemünde	Great Britain Ian Barker Tim Hancock	Great Britain Paul Brotherton Bill Masterman	Denmark Jørgen Schønherr Michael Poulsen
1994 Durban	Australia Chris Nicholson Darren Nicholson	Great Britain Ian Barker Tim Hancock	Denmark Jørgen Schønherr Michael Poulsen
1995 Mounts Bay	Great Britain Jeremy Robinson Bill Masterman	Sweden Krister Bergström Thomas Moss	Sweden Ebbe Rosén Olle Wenrup
1996 Townsville	Great Britain Paul Towers Dan Johnson	United States Howie Hamlin Cam Lewis	Great Britain Ian Barker Daniel Cripps
1997 Gilleleje	Great Britain Mark Upton-Brown Ian Mitchell	Sweden Ebbe Rosén Olle Wenrup	United States Howie Hamlin Mike Martin
1998 Hyannis	United States Nick Trotman Mike Mills	United States Howie Hamlin Mike Martin	Great Britain Ian Barker Daniel Cripps
1999 Quiberon	United States Howie Hamlin Mike Martin	United States Andy Beeckman Ben Benjamin	Denmark Jørgen Schønherr Anders Kæmpe
2000 Durban	Sweden Krister Bergström Thomas Moss	United States Mike Martin Steve Bourdow	United States Howie Hamlin Peter Alarie
2001 Cascais	Germany Wolfgang Hunger Holger Jess	Great Britain Ian Pinnell Tim Hancock	Sweden Krister Bergström Thomas Moss
2002 Fremantle	Australia Chris Nicholson Darren Nicholson	United States Howie Hamlin Mike Martin	Sweden Krister Bergström Thomas Moss
2003 Malmö	Germany Wolfgang Hunger Holger Jess	Sweden Krister Bergström Johan Barne	United States Howie Hamlin Peter Alarie
2004 Santa Cruz	United States Morgan Larson Trevor Baylis	United States Howie Hamlin Peter Alarie	United States Mike Martin Jeff Nelson
2005 Warnemünde	Germany Wolfgang Hunger Holger Jess	United States Mike Martin Jesse Falsone	Germany Dietrich Scheder-Bieschin Reiner Görge
2006 Hayling Island	Great Britain Mark Upton-Brown Ian Mitchell	United States Howie Hamlin Jeff Nelson	Germany Jens Findel Johannes Tellen
2007 Adelaide	Denmark Jan Saugmann Morten Ramsbæk	United States Howie Hamlin Fritz Lanzinger	Australia Sandy Higgins Paul Marsh
2008 Palermo	Great Britain Ian Pinnell Carl Gibbon	United States Howie Hamlin Andy Zinn	Germany Wolfgang Hunger Julien Kleiner
2009 San Francisco	United States Mike Martin Jeff Nelson	United States Mike Holt Carl Smit	Australia Chris Nicholson Casey Smith
2010 Aarhus	Germany Wolfgang Hunger Julien Kleiner	Denmark Jørgen Bojsen-Møller Jacob Bojsen-Møller	Great Britain Ian Pinnell Ian Mitchell
2011 Hamilton Island	Germany Wolfgang Hunger Julien Kleiner	United States Mike Holt Carl Smit	Australia Sandy Higgins Paul Marsh
2012 La Rochelle	Denmark Jan Saugmann Martin Görge	Denmark Jørgen Bojsen-Møller Jacob Bojsen-Møller	Germany Christian Kellner Martin Schoeler
2013 Barbados	Germany Claes Lehmann Leon Oehme	Germany Stefan Böhm Gerald Roos	Germany Wolfgang Hunger Holger Jess
2014 Kiel	United States Mike Holt Rob Woelfel	Australia Peter Nicholas Luke Payne	Germany Wolfgang Hunger Julien Kleiner
2015 Port Elizabeth	United States Mike Holt Carl Smit	Great Britain Ian Pinnell Johannes Tellen	United States Ted Conrads Brian Haines
2016 Weymouth	United States Mike Martin Adam Lowry	United States Mike Holt Carl Smit	Germany Wolfgang Hunger Julien Kleiner
2017 Annapolis[6]	United States Mike Holt Carl Smit	United States Mike Martin Adam Lowry	Great Britain Andy Smith Roger Gilbert
2018 Gdynia[7]	Germany Lutz Stengel Holger Jess	United States Mike Holt Carl Smit	Germany Jan-Philipp Hofmann Felix Björn Brockerhoff
2019 Fremantle[8][9]	United States 9106 Mike Martin Adam Lowry	United States 9072 Mike Holt Carl Smit	United States 9004 Parker Shinn Eric Anderson
2020 Båstad[10]	Canceled[11] due to the COVID-19 pandemic.

References

1. "Archived copy". Archived from the original on 2016-01-21. Retrieved 2015-06-11.CS1 maint: archived copy as title (link)
2. "International 505". Outer Harbour Centreboard Club. Archived from the original on July 30, 2013. Retrieved July 20, 2013.
3. "Portsmouth Number List 2012". Royal Yachting Association. Retrieved 31 July 2012.
4. "Centerboard Classes". US Sailing. Archived from the original on 15 March 2012. Retrieved 31 July 2012.
5. "Summary of Rule Changes". www.int505.org. International 505. Archived from the original on 2018-06-12. Retrieved 2018-06-05.
6. https://yachtscoring.com/event_results_cumulative.cfm?eID=4206
7. "Results are final as of 17:12 on July 27, 2018". 505 Worlds 2018. 2018-07-27. Retrieved 2018-07-28.
8. "Fremantle, January 2019: 505 World Championship". Fremantle Sailing Club. Retrieved 2018-12-20.
9. "505 Worlds 2019 - Leaderboard". SAP Sailing. 2019-01-07. Retrieved 2019-01-07.
10. "Venue Selection". International 505 Sailing. Retrieved 2019-01-09.
11. "5O5 World Championship 2020 Cancelled". 2020-04-07. International 5O5 Sailing. Retrieved 2020-04-07.

External links

• Official class website
• Official US class magazine website
• review
• Sandgate Yacht Club 505 Sailing
• ISAF 505 Microsite Website
• Rondar Raceboats, UK 505 builder
• JESS Segelsport, German 505 supplier/rigger, uses Rondar hulls
• Pinnell & Bax, UK 505 supplier/rigger, uses Rondar hulls
• Van Munster Boats, Australian 505 builder
• Binks Marine (Sandy Higgins), Australian 505 builder/rigger