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Boats in the International Ten Rater (10R) class are not limited in length by the class rules and usually have overhangs extending beyond their waterline endings. They are generally light, narrow, stable, seaworthy and fast. This IRSA international rule is based on the 1887 "length and sail area rating rule" which allows shorter waterline length boats to have higher sail areas, while longer LWL boats have smaller sails. It is an ‘open’ rule with great freedom to develop design and construction, particularly in rigs and sail plans. Many different hull forms can be found in the 10R class. A modern 10R will usually be made almost entirely of carbon fibre - hull, foils, spars and fittings.

The Ten Rater is a thoroughbred racing boat. They are really fast and powerful, making for exciting sailing. Some people have described them as "racing goannas".

Internationally, the class has undergone a resurgence in the last five years. World Championships have been held in 2016 and 2018 attracting many boats. Large fleets are building in England, France, Germany and Italy. Australia has always been a strong country in the Ten Rater class, with good numbers in Western Australia, New South Wales and Queensland Recently, further interest has built in Victoria, ACT and Tasmania.

There are annual National Championships in Australia, as well as State Championships and Regional events around the country.

Class details:

Open class
Waterline length x Sail area = constant (longer boats have less sail area, shorter boats have more sail area)
Carbon hulls, foils and spars
Hull length 1.3 to 1.8 m
Displacement 5 to 7 kgs
Draught 700 mm
Sail area 0.9 to 1.1 m²

DOWNLOADS

TenRater Class Rules 2018

10RCertificate and Measurement Form 2020

10 Rater Rig and Sail Measurement Instructions

 

Latest Results

Nov 28, 2020
2020 WA IOM State Championship
Results updated on Nov 28, 2020
Nov 15, 2020
IOM WA Metro Championship
Results added on Nov 16, 2020
Nov 07, 2020
2020 WA DF65 State Championship
Results added on Nov 08, 2020
Nov 01, 2020
2020 WA Marblehead Class State Championship
Results added on Nov 01, 2020
Oct 11, 2020
2020 WA Ten Rater State Championship
Results added on Oct 15, 2020

Coming Events

Apr 17, 2021
South Metro IOM Championship
Harrington Waters, WA