Rules & Resources

Class Rules

To download the current ISCA Constitution, Rules & Specifications, revised September 2013, click here.

New Class Rules, in Standard Class Rules format, are currently being worked on by the ISCA Committee in conjunction with World Sailing.  To view a DRAFT of these new rules, click here.

Class Branding

The Shark logo and SHARK 24 are registered trade-marks of ISCA.  ISCA is pleased to provide the following resources to members to encourage consistent branding for the Class.  If you need any other file formats, please contact the Webmaster.

Shark design - JPEG (web format) and PNG (transparent vector format).   Click on a thumbnail below & right click to save:

Copyright © International Shark Class Association. All rights reserved.

​​​Shark Sail Plan - JPEG format drawn by RC Frederick Studio.  Click thumbnail below & right click to save:

ISCA logo - PNG (transparent vector format).  Click thumbnail below & right click to save:

Sail Labels

All sails must bear an ISCA sail label, per the Class Constitution (12(g)) and our Class Rules (8.1(c)). Most Shark Class sailmakers purchase and install ISCA labels on all sails.  If you need extra sail labels, the cost is $20 per label and can be ordered by contacting the Treasurer


For information on a new Shark 24, visit Bodo Guenther Marinedepot