The following diagrams are for reference only.  For Endorsed IRC measurements, please contact a certified measurer.  Email IRC@USSailing.org for more details.  (See IRC Yearbook for further details)

Diagrams by section: 

• Drop/swing keels

• Bow and stern overhangs

• Rig and sails

• Measuring HHB

 

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IRC measurement - bow and stern overhangs, y, h, x

 

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IRC measurement - rig and sails (click the graphic to enlarge)

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Note:  All Diagrams are provided courtesy of the RORC. 

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