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  • Home
  • Shark24 News
  • World Champions
  • Hall of Fame
  • G. Hinterhoeller Award
  • Contact Us
  • Rules & Resources
  • Useful Links
  • About Us
  • World Cup 2022 Results
  • World Sailing
  • World Cup 2023 Results

About Us

International Shark Class Association (ISCA)

Welcome to the International Shark Class Association (ISCA), the governing body of the Shark 24 one-design keelboat.  ​The Shark 24 is a recognized class by World Sailing and is one of the largest one-design keelboat classes in the world, with over 550 members and active fleets in Canada, the US, Austria, Germany and Switzerland.  


The International Shark Class Association (ISCA) Is the governing body of the Shark one-design keelboat with active National Associations in Canada, Germany, Austria and Switzerland. Regular regattas are held on the Great Lakes and on the large lakes in Germany, Austria and Switzerland, culminating with the World Championship which alternates to Europe every third year. 


​The purpose of ISCA is to promote and further the interest of the Shark Class throughout the world by: a) maintaining the one-design character of the SHARK 24,  b) coordinating and managing the affairs and rules of the Class,  c) making recommendations on the control of the licensed builders,  ​d) encouraging and coordinating both national and international competition and cruising in the Class, and e) providing relevant information to members of the Class associations.

The Shark24

The Shark 24 is a 24-foot fibreglass keelboat designed by George Hinterhoeller in 1959.  For some interesting history on the Shark 24 and George Hinterhoeller, click here.


  • LOA: 24 ft 0 in. (7315 mm)
  • LOA: 24 ft 0 in. (7315 mm)
  • Keel: 675 lb (306 kg)
  • Beam: 6 ft 10 in. (2083 mm)
  • Draft: 3 ft 2 in. (965 mm)
  • Net Weight: 2100 lb (953 kg)
  • Sail Area with Genoa: 240 sq. ft
  • Crew: 3 min. (no max.)
  • First Built: 1959
  • Hulls Built: over 2000


Builders:

  • Hinterhoeller Limited
  • C&C Yachts
  • Halman Manufacturing Co.
  • Bodo Guenther Marinedepot (current builder)



Copyright © 2023 International Shark Class Association - All Rights Reserved.

ISCA copywrite 2021(c),

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