# 5.5 Metre (keelboat)

International 5.5 Metre

Class Symbol
Current Specifications
Crew 3
Type Monohull
Design Development class
Keel Fixed
LOA About: 9.5 m (31 ft)
Beam Minimum: 1.92 m (6 ft 4 in)
Draft Maximum: 1.35 m (4 ft 5 in)
Hull weight Minimum: 1,700 kg (3,700 lb)
Maximum: 2,000 kg (4,400 lb)
Main & Jib area Minimum: 26.5 m2 (285 sq ft)
Maximum: 29.0 m2 (312 sq ft)
Spinnaker area About: 50.0 m2 (538 sq ft)
Development
Year Basic rule:
1949
Designer Basic rule designer:
Charles E. Nicholson
Infobox last updated: 08-AUG-2011
Vintage Yachting Class

The International 5.5 Metre Class was created to yield a racing keel boat giving a sailing experience similar to that of the International 6 Metre Class, but at a lower cost.

The main class regulation is a restriction on a single quantity output from a formula involving the boat's rating length L, weight (expressed as a displacement D) and sail area S; the regulation states that the output of this formula must not exceed 5.500 metres. There is considerable scope for variations in design while still meeting this restriction, and as a result each 5.5 metre boat is unique.

If the design parameters of a proposed new boat result in a formula output exceeding 5.5 metres, then one or more of the parameters must be suitably adjusted. Performance data gained from testing models towed in a long water tank (referred to in yacht design as Ship model basin) can suggest optimal combinations of parameters. The 5.5. metre rule is a variant of the International Rule (sailing) that was established already in 1907. The 5.5. is therefore closely related to larger metre boats such as the 6mR, 8mR and the 12mR.

Since 2010 the 5.5 Metre is one of the Vintage Yachting Classes at the Vintage Yachting Games.

## The Formula

The measurement formula is given in the 2006 International Five Point Five Metre Rating Rules:

$5.500 \mbox{ metres} \ge 0.9 \cdot \left( \frac{L \cdot \sqrt[2]{S}} {12 \cdot \sqrt[3]{D}} + \frac{L + \sqrt[2]{S}} {4} \right)$

where

• $L$ = length for rating
• $S$ = measured sail area
• $D$ = displacement in cubic metres

## International 5.5 Metre Class Association [1]

International 5.5 Metre

The object of the International 5.5 Metre Class Association is to promote and develop 5.5 Metre racing throughout the World. The first President of the association was Mr. Owen Aisher.

Since the development of the class spanned more than half a century the early boats are not competitive to race against the modern designs. Therefore the association made, in 2007, divisions in the class based upon age of the boat:[2]

• Classic Fleet (Designs before 1970)
• Evolution Fleet
• Modern Fleet (Designs from 1994)

During major races there are separate trophies per fleet, however if a classic fleet boat beats the modern fleet, the classic fleet boat wins the modern fleet trophee.

## History and Olympic career

5.5-metre class Olympic race in Helsinki 1952. Boats are German Tom Kyle (G I), Gold medalist Complex II (US I) and Danish Jill (D 2).

The 5.5-metre class was a redesign of the 6-metre class by Charles E. Nicholson in 1937. The first boats conforming to the 5.5-metre rule were built in 1949. There had been an earlier attempt to build a cheaper alternative to the Sixes. In 1929 the 5-metre class was established by the French "Union de Societes Nautique Francaise" and the class was accepted in London. It achieved a position as the smallest new international metre class and some hundreds boats were built. Nevertheless the 5 metre never managed to achieve an Olympic status. The 5.5-metre class replaced it quickly and was raced in Olympics for first time in 1952 Summer Olympics in Helsinki. The Scandinavian Gold Cup has also been competed with 5.5m boats since 1953. 5.5 metre boats replaced the International 6-metre at the 1956 Olympic Games held in Melbourne, Australia. The 5.5 metre participation in the Olympic sailing events continued at the 1960 Olympic Games and 1964 Olympic Games. During 1960s it however began to draw similar criticism as preceding six-metre class - namely, increasing costs - and the boat lost Olympic status after 1968 Olympic Games, due to excessive design and building costs of one off boats, marking the end of development class keel boats in Olympic regattas. However, the class remained active thereafter and 5.5-metre boats are still very actively raced.

## Wall of Fame

### Olympic Games[3]

Rank  Nation Gold Silver Bronze Total
1  Sweden (SWE) 2 1 1 4
2  United States (USA) 2 0 2 4
3  Australia (AUS) 1 0 0 1
4  Great Britain (GBR) 0 1 1 2
Switzerland (SUI) 0 1 1 2
6  Denmark (DEN) 0 1 0 1
Norway (NOR) 0 1 0 1
5 5 5 15
Event Gold Silver Bronze
1952

Harmaja
details
United States (USA)
Britton Chance
Michael Schoettle
Edgar White
Sumner White
Norway (NOR)
Peder Lunde
Vibeke Lunde
Børre Falkum-Hansen
Sweden (SWE)
Folke Wassén
Carl-Erik Ohlson
Magnus Wassén
1956

Port Phillip Bay
details
Sweden (SWE)
Lars Thörn
Hjalmar Karlsson
Sture Stork
Great Britain (GBR)
Robert Perry
Neil Kennedy-Cochran-Patrick
John Desmond Dillon
David Graham Bowker
United States (USA)
Jock Sturrock
Devereaux Mytton
Douglas Buxton
1960

Gulf of Naples
details
United States (USA)
George O'Day
James Hunt
David Smith
Denmark (DEN)
William Berntsen
Søren Hancke
Steen Christensen
Switzerland (SUI)
Henri Copponex
Manfred Metzger
Pierre Girard
1964

Sagami Bay
details
Australia (AUS)
Bill Northam
Peter O'Donnell
James Sargeant
Sweden (SWE)
Lars Thorn
Sture Stork
Arne Karlsson
United States (USA)
John J. McNamara
Francis Scully
Joseph Batchelder
1968

Acapulco
details
Sweden (SWE)
Ulf Sundelin
Jörgen Sundelin
Peter Sundelin
Switzerland (SUI)
Louis Noverraz
Marcel Stern
Bernard Dunand
Great Britain (GBR)
Robin Aisher
Paul Anderson

### Vintage Yachting Games [4]

Rank  Nation Gold Silver Bronze Total
1  Finland 1 0 0 1
2  Germany 0 1 0 1
3  France 0 0 1 1
Event Gold Silver Bronze
2012

Lake Como
Finland (FIN)
Anders Nordman
Robert Segercrantz
Johan Hjelt
Germany (GER)
Hubert 'Biwi' Reich
Wolfgang Oehler
Christian Hemmerich
France (FRA)
William Borel
Yves Duclos-Grenet
2016

Weymouth Bay
Dates to be decided

### Pan American Games[5]

Rank  Nation Gold Silver Bronze Total
1  United States 1 0 0 1
2  Canada 0 1 0 1
3  Ecuador 0 0 1 1
1 1 1 3
Event Gold Silver Bronze
1959

Chicago

### World Championships[6]

Where not otherwise possible only the helmsmen are listed.

Rank  Nation Gold Silver Bronze Total
1   Switzerland 18 14 8 40
2  United States 10 9 14 33
3  Australia 7 4 4 15
4  Norway 7 6 6 19
5  Bahamas 2 3 6 11
6  Denmark 1 1 0 2
7  France 1 0 1 2
Germany 1 0 1 2
Italy 1 0 1 2
10  Finland 0 6 4 10
11  Sweden 0 2 0 3
12  United Kingdom 0 1 2 3
13  West Germany 0 1 0 1
14  Netherlands 0 0 1 1
48 48 48 144
Event Gold Silver Bronze
1961

Helsinki
Switzerland (z)
Louis Noverraz
Denmark (D)
William Eldred Berntsen
Italy (I)
G. Carcano
1962

Poole
United States (US)
Britton Chance
Bahamas (KB)
Robert Symonette
United Kingdom (K)
C. Hall
1963

Seawanhaka
United States (US)
Raymond Hunt
Sweden (S)
Lars Thörn
United States (US)
Ernest Fay
1964 No worlds due to Olympic Games
1965

Napoli
Italy (I)
Agostino Straulino
Australia (KA)
Norman Booth
United States (US)
Gardner Cox
1966

København
Denmark (D)
Paul Elvstrøm
West Germany (G)
R. Harmsdorf
United Kingdom (K)
Robin Aisher
1967

Nassau
United States (US)
G. Lindamann
United Kingdom (K)
Robin Aisher
United States (US)
Gardner Cox
1968 No worlds due to Olympic Games
1969

Sandhamn
France (F)
Jean-Marie le Guillou
Sweden (S)
Ulf Sundelin
Australia (KA)
T. Nathorst
1970

Sydney
Australia (KA)
David Forbes (sailor)
United States (US)
R. Turner III
United States (US)
Ernest Fay
1971

Seawanhaka
United States (US)
R. Turner III
Australia (KA)
David Forbes (sailor)
Norway (N)
King Olav
1972

Genève
Switzerland (Z)
Claude Bigar
United States (US)
R. Turner III
United States (US)
Ernest Fay
1973

Lysekil
United States (US)
Ernest Fay
Bahamas (KB)
Robert Symonette
Australia (KA)
M. Morris
1974

Sydney
Australia (KA)
Norman Booth
Norway (N)
Harald V of Norway
Australia (KA)
1975

Neuchâtel
1976

Hankø
Australia (KA)
Frank Tolhurst
United States (US)
R. Turner III
Norway (N)
Olav V of Norway
1977

Bénodet
Australia (KA)
H. Vaughan
Bahamas (KB)
Robert Symonette
Switzerland (Z)
Jean Lauener
1978

Sandhamn
Australia (KA)
Frank Tolhurst
Switzerland (Z)
Hans Aeppli
Switzerland (Z)
Thomas Sprecher
1979

Hankø
Australia (KA)
Frank Tolhurst
Finland (L)
M. Rouhiainen
United States (US)
Albert Bel Fay
1980

Sydney
Bahamas (KB)
Robert Symonette
Australia (KA)
Frank Tolhurst
United States (US)
Albert Bel Fay
1981

Nassau
Australia (KA)
Roy Tutty
Australia (KA)
Frank Tolhurst
Bahamas (KB)
Robert Symonette
1982

Genève
Switzerland (Z)
Jean-Claude Vuithier
Switzerland (Z)
Pierre-Yeves Firmenich
Switzerland (Z)
Philippe Dürr
1983

Hankø
United States (US)
Albert Bel Fay
Sweden (S)
Jens Busch
United States (US)
T. Omohundro
1984

Porto Cervo
Switzerland (Z)
Philippe Dürr
Norway (N)
Harald V of Norway
United States (US)
T. Omohundro
1985

Newport
Switzerland (Z)
Philippe Dürr
United States (US)
T. Omohundro
United States (US)
Robert Mosbacher
1986

Sydney
Bahamas (KB)
Robert Symonette
Finland (L)
Tom Jungell
Norway (N)
J. E. Dyvi
1987

Hankø
Switzerland (Z)
Ronald Pieper
Finland (L)
Peter Tallberg
United States (US)
Albert Bel Fay
1988

Genève
Switzerland (Z)
Rico Gregorini
Switzerland (Z)
Philippe Dürr
Switzerland (Z)
Jürg Weber
1989

Houston
United States (US)
G. Francisco IV
United States (US)
Peter Masterson
Australia (KA)
Frank Tolhurst
1990

Torquay
Norway (N)
Kalle Nergaard
United States (US)
Peter Masterson
United States (US)
Albert Bel Fay
1991

Sydney
Switzerland (Z)
Christian Wahl
United States (US)
Michael Haines
Norway (N)
Kalle Nergaard
1992

Nassau
Switzerland (SUI)
Christian Wahl
United States (USA)
Peter Masterson
Finland (FIN)
Henrik Dahlmann
1993

Hankø
Norway (NOR)
Kristian Nergaard
Finland (FIN)
Henrik Dahlmann
United States (USA)
Glen Foster
1994

Crouesty
Switzerland (SUI)
Dominique Lauener
Norway (NOR)
Kristian Nergaard
France (FRA)
Marc Pajot
1995

Hanko
United States (USA)
Glen Foster
Switzerland (SUI)
Dominique Lauener
Finland (FIN)
Henrik Dahlmann
1996

Muiden
Norway (NOR)
Kristian Nergaard
United States (USA)
Glen Foster
Switzerland (SUI)
Christof Wilke
1997

Key Biscane
United States (USA)
Glen Foster
Switzerland (SUI)
Bruno Marazzi
Finland (FIN)
Erik Dahlmann
1998

Cowes
United States (USA)
Glen Foster
Switzerland (SUI)
Jürg Menzi
Switzerland (SUI)
Roni Pieper
1999

Torbole
Switzerland (SUI)
Jürg Menzi
Switzerland (SUI)
Bruno Marazzi
United States (USA)
Glen Foster
2000

Medemblik
Switzerland (SUI)
Jürg Menzi
Switzerland (SUI)
Hans-Peter Schmid
Bahamas (BAH)
Gavin McKinney
2001

Glücksburg
Switzerland (SUI)
Jochen Schümann
Switzerland (SUI)
Jürg Menzi
Bahamas (BAH)
Gavin McKinney
2002

Helsinki
Switzerland (SUI)
Bruno Marazzi
Switzerland (SUI)
Jürg Menzi
Bahamas (BAH)
Gavin McKinney
2003

Bénodet
Norway (NOR)
Kristian Nergaard
Finland (FIN)
Johan Gullichsen
Switzerland (SUI)
Jürg Menzi
2004

Torbole
Switzerland (SUI)
Bruno Marazzi
Switzerland (SUI)
Jürg Menzi
Finland (FIN)
Johan Gullichsen
2005

Sydney
Switzerland (SUI)
Jochen Schümann
Finland (FIN)
Johan Gullichsen
Switzerland (SUI)
Bruno Marazzi
2006

Medemblik
Switzerland (SUI)
Flavio Marazzi
Switzerland (SUI)
Jochen Schümann
Netherlands (NED)
2007

San Remo
Switzerland (SUI)
Flavio Marazzi
Norway (NOR)
Kristian Nergaard
Bahamas (BAH)
Gavin McKinney
2008

Nassau
Norway (NOR)
Kristian Nergaard
Harry Melges III
Mark Strube
Switzerland (SUI)
Flavio Marazzi
Stefan Haftka
Renato Marazzi
Bahamas (BAH)
Gavin McKinney
Peter Hauff
Lars Horn Johannesen
2009

Hankø
Norway (NOR)
Kristian Nergaard
Johan Barne
Petrus Eide
Norway (NOR)
Christoph Burger
Christof Wilke
Marcel Simon
Norway (NOR)
Petter Fjeld
Christen Horn Johannessen
Thomas Borgen
2010

Lake Garda
Switzerland (SUI)
Flavio Marazzi
Andrew Palfrey
Christof Wilke
Norway (NOR)
Kristian Nergaard
Peer Moberg
Petter Morland Pedersen
Finland (FIN)
Kenneth Thelen
Thomas Hallberg
Robert Nyberg
2011

Helsinki
Finland (FIN)
Kenneth Thelen
Thomas Hallberg
Robert Nyberg
Norway (NOR)
Kristian Nergaard
Trond Solli-Säther
Christen Horn Johannessen
Switzerland (SUI)
Jürg Menzi
Andreas Honegger
Christof Wilke
2012

Boltenhagen
Norway (NOR)
Kristian Nergaard
Johan Barne
Trond Solli-Säther
Switzerland (SUI)
Flavio Marazzi
Stefan Haftka
Marc Friedrich
Germany (GER)
Jochen Schümann
Henning Ueck
Ole Hansen
2013

Curaçao
Germany (GER)
Marcus Wieser
Frithjof Kleen
Thomas Auracher
Norway (NOR)
Kristian Nergaard
Trond Solli-Säther
Johan Barne
Norway (NOR)
Petter Fjeld
Thomas Borgen
Christen Horn Johannessen

### European Championships[7]

Only helmsmen are listed.

Rank  Nation Gold Silver Bronze Total
1   Switzerland 6 3 6 15
2  Norway 1 2 0 3
3  United States 1 0 1 2
4  United Kingdom 0 1 1 2
5  France 0 1 0 1
Soviet Union 0 1 0 1
8 8 8 24
Event Gold Silver Bronze
1968

Neuenburger See
Switzerland (Z)
Louis Noverraz
Soviet Union (SR)
Konstantin Alexandrov
United Kingdom (K)
Robin Aisher
1980

Bénodet
Switzerland (F)
Sprecher
France (F)
Souben
Switzerland (Z)
Capecchi
1995

Thun
Switzerland (SUI)
Daniel Schenker
Switzerland (SUI)
Jürg Menzi
Switzerland (SUI)
Bruno Marazzi
1997

Le Crouesty
United States (FRA)
Glen Foster
Switzerland (SUI)
Jean-Claude Vuithier
Switzerland (SUI)
Jürg Menzi
1998

Cannes
Switzerland (FRA)
Christian Wahl
Norway (NOR)
Kalle Nergaard
United States (USA)
Glen Foster
2000

Genova
Switzerland (ITA)
Thomas Moser
United Kingdom (GBR)
Jonathan Janson
Switzerland (SUI)
Jürg Menzi
2005

Attersee
Switzerland (AUT)
Jürg Menzi
Switzerland (SUI)
Christoph Burger
Switzerland (SUI)
Hans-Peter Schmid
2008

Mariehamn
Norway (FIN)
Kristian Nergaard
Petrus Eide
Johan Barne
Norway (NOR)
Christoph Burger
Christof Wilke
Mathias Dahlman
Dominik Neidhart 1:st race only
Switzerland (SUI)
Jürg Menzi
Daniel Stampfli
Léonard Gaume

### Winners Scandinavian Gold Cup

Rank Nation Total
1  United States 17
2  Norway 13
3  Australia 7
4  Bahamas 6
Sweden 6
Finland 6
7   Switzerland 5
8  Italy 1
Netherlands 1
62
Year Victor Boatname Helmsman/Team Venue
1953  Sweden (S) Ian IX C. Turitz
1954  Sweden (S) Ian IX C. Turitz
1955  Italy (I) Twins VII Massimo Oberti
1956  Norway (N) Norna VIII Finn Ferner
1957  United States (US) Flame Albert Bel Fay
1958  United States (US) Sabre E.B. Fay
1959  Sweden (S) Rush V L. Thorn
1960  Sweden (S) Wasa P. Gedda
1961  Sweden (S) Nowa F. Wassem
1962  United States (US) Pride E.B. Fay
1963  United States (US) Pride E.B. Fay
1964  United States (US) Flame Albert Bel Fay
1965  United States (US) Pride E.B. Fay
1966  United States (US) Pride E.B. Fay
1967  Sweden (S) Wasa III Sundelin bros.
1968  Norway (N) Fram IV Harald V of Norway
1969  Australia (KA) Pam Gordon Ingate
1970  United States (US) Nemesis R.E.Turner
1971  United States (US) Tiger R.E.Turner
1972  Australia (KS) Southern Cross Frank Tolhurst
1973  United States (US) Sundance E.B. Fay
1974  Bahamas (KB) John B Robert Symonette
1975  Australia (KA) Antares M. Morris
1976  Australia (KA) Arunga Frank Tolhurst
1977  Bahamas (KB) John B Robert Symonette
1978  Australia (KA) Arunga III Frank Tolhurst
1979  United States (US) Wildfire Albert Bel Fay
1980  Australia (KA) Arunga III Frank Tolhurst
1981  United States (US) Wildfire Albert Bel Fay
1982  Bahamas (KB) Ballymena Robert Symonette
1983  Bahamas (KB) Ballymena Robert Symonette
1984   Switzerland (Z) Alzira Willy Vollenweider
1985  Finland (L) Helena Tom Jungell
1986  Finland (L) Tre Gubbar Jussi Gullichsen
1986  Australia (KA) Jan VI B. Ritchie
1987  United States (US) Gorgi Robert Mosbacher
1988   Switzerland (Z) Artemis Ronald Pieper
1989  Finland (L) Gorgi Henrik Lundberg
1990  Norway (N) Alfredo Kalle Nergaard
1991  United States (US) Thunderbunny Michael Haines
1992  Norway (NOR) Alfredo Kalle Nergaard
1993  Norway (NOR) Zenda Corn Kalle Nergaard
1994  Norway (NOR) Zenda Corn Kristian Nergaard
1995  Finland (FIN) DoDoToo Henrik Dahlman
1996  United States (USA) My Shout Glen Foster
1997  Norway (NOR) Zenda Corn John Platou
1998  United States (USA) My Shout Glen Foster
1999  United States (USA) My Shout Glen Foster
2000  Bahamas (BAH) John B once again Gavin McKinney Medemblik
2001  Bahamas (BAH) John B Once again Gavin McKinney Flensburg
2002   Switzerland (SUI) Marie-Françoise XV Jürg Menzi Helsinki
2003  Norway (NOR) Artémis X Kristian Nergaard Thun
2004  Norway (NOR) Artémis X Kristian Nergaard Hankø
2005   Switzerland (SUI) Ali-Baba Flavio Marazzi Sydney
2006  Netherlands (NED) Maitresse Hans Nadorp Medemblik
2007   Switzerland (SUI) Ali Baba Bruno Marazzi San Remo
2008  Norway (NOR) Artémis X Kristian Nergaard
Petrus Eide
Johan Barne
Nassau
2009  Norway (NOR) John B Gavin McKinney
Bjorn Westergaard
Peter Vlasov
Hankø
2010  Norway (NOR) Artémis XIV Kristian Nergaard
Peer Moberg
Petter Morland Pedersen
Lake Garda
2011  Finland (FIN) Kan-Bei 2 Kenneth Thelen
Thomas Hallberg
Robert Nyberg
Helsinki
2012  Finland (FIN) Addam 4 Johan Gullichsen
Henrik Lundberg
Timo Telkola
Boltenhagen
2012  Norway (NOR) NOR 57 Kristoffer Spone
Johan Barne
Christen Horn Johannessen
Curaçao